WO2007129491A1 - 試験装置、回路および電子デバイス - Google Patents
試験装置、回路および電子デバイス Download PDFInfo
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- WO2007129491A1 WO2007129491A1 PCT/JP2007/052565 JP2007052565W WO2007129491A1 WO 2007129491 A1 WO2007129491 A1 WO 2007129491A1 JP 2007052565 W JP2007052565 W JP 2007052565W WO 2007129491 A1 WO2007129491 A1 WO 2007129491A1
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- clock signal
- signal
- data signal
- circuit
- delay
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/3181—Functional testing
- G01R31/319—Tester hardware, i.e. output processing circuits
- G01R31/31917—Stimuli generation or application of test patterns to the device under test [DUT]
- G01R31/31922—Timing generation or clock distribution
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/30—Marginal testing, e.g. by varying supply voltage
- G01R31/3016—Delay or race condition test, e.g. race hazard test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/31725—Timing aspects, e.g. clock distribution, skew, propagation delay
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/317—Testing of digital circuits
- G01R31/31727—Clock circuits aspects, e.g. test clock circuit details, timing aspects for signal generation, circuits for testing clocks
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
- H03K5/13—Arrangements having a single output and transforming input signals into pulses delivered at desired time intervals
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- H10P74/00—
Definitions
- the present invention relates to a test apparatus, a circuit, and an electronic device.
- the present invention relates to a test apparatus, a circuit, and an electronic device that adjust the phase of a clock signal.
- This application is related to the international applications listed below. For designated countries where incorporation by reference is allowed, the contents described in the following application are incorporated into this application by reference and made a part of this application.
- a conventional test apparatus For testing such a semiconductor memory, a conventional test apparatus adjusts a test reference clock signal so as to be synchronized with a clock signal taken from the semiconductor memory. Then, the test apparatus tests whether the data signal can be read based on the adjusted reference clock signal. An artificial delay is generated in the reference clock signal by the strobe signal, and the ability to read data is tested if the delay is within the reference range.
- Jitter may occur in a data signal generated from a semiconductor memory.
- the clock signal generated from the semiconductor memory In many cases, similar jitter occurs.
- the reference clock signal in the conventional test apparatus is not affected by jitter generated in the clock signal after being adjusted. For this reason, a phase difference due to the occurrence of jitter occurs between the reference clock signal and the data signal, which may reduce the test accuracy.
- an object of the present invention is to provide a test apparatus, a circuit, and an electronic device that can solve the above-described problems.
- This object is achieved by a combination of features described in the independent claims.
- the dependent claims define further advantageous specific examples of the present invention.
- an electronic device including a receiving circuit that receives an input data signal and an input clock signal indicating a timing at which the input data signal is to be acquired.
- the receiving circuit adjusts a phase difference between the input data signal and the input clock signal to a first phase difference, and outputs the first data signal and the first clock signal as a first adjustment unit, and the first clock
- a phase changing unit that outputs a second clock signal having a specified phase difference with respect to the signal, and the first clock signal based on a result obtained by acquiring the first clock signal at a change timing of the second clock signal.
- An electronic device having a data acquisition unit for receiving data is provided.
- the electronic device may receive the input data signal and the input clock signal from another external device.
- the electronic device further includes a device for receiving the input data signal from other external devices, and further includes a clock recovery circuit for recovering the input clock signal from the input data signal. Data may be received by inputting the input data signal received from the device and the input clock signal recovered by the clock recovery circuit.
- an electronic device that receives an input data signal and an input clock signal indicating a timing at which the input data signal is to be acquired.
- a first adjustment unit that adjusts the phase of at least one of the input data signal and the input clock signal and outputs the first data signal and the first clock signal that match the timing of the change point, and specifies the input clock signal
- the delay amount of the variable delay circuit is adjusted based on the result obtained by obtaining the first clock signal by the change timing of the second clock signal, and the variable delay circuit outputting the second clock signal after being delayed by the specified time.
- a second adjusting unit that adjusts a phase difference of the second clock signal with respect to the first clock signal to a desired phase difference, and changing timing of the second clock signal to the first data signal.
- an electronic device that receives a signal from an external device, the reference clock generator generating a reference clock, and the external device power S output data
- a first variable delay circuit that delays a signal for a specified time and outputs it as a delayed data signal; and a first clock that delays a specified time by a clock signal that is output from the external device and indicates the timing at which the data signal should be acquired.
- a second variable delay circuit that outputs a delayed clock signal; a first flip-flop that acquires the delayed data signal at a timing based on the reference clock; and the first delayed clock signal that is acquired at a timing based on the reference clock.
- the second flip-flop, and the first flip-flop and the second flip-flop And a first delay adjustment unit that adjusts a delay amount of at least one of the first variable delay circuit and the second variable delay circuit so as to acquire the first delay clock signal at the timing of a signal change point, and the clock
- a third variable delay circuit that delays the signal for a specified time and outputs it as a second delayed clock signal, and a change in the second delayed clock signal from the first delayed clock signal whose phase is adjusted by the first delay adjustment unit.
- a second phase adjusting the phase difference between the first delay clock signal and the second delay clock signal to a desired phase difference by adjusting the delay amount of the third variable delay circuit based on the result obtained at the timing.
- a delay adjustment unit, and receiving the signal of the external device power by acquiring the delay data signal at the change timing of the second delay clock signal.
- a circuit that receives an input data signal and an input clock signal indicating a timing at which the input data signal is to be acquired, and receives data. Therefore, the first adjustment unit that adjusts the phase difference between the input data signal and the input clock signal to the first phase difference and outputs the first data signal and the first clock signal, and the first clock signal A phase changing unit that outputs a second clock signal having a phase difference specified in the above, and based on a result obtained by acquiring the first clock signal at a change timing of the second clock signal, the phase change unit for the first clock signal.
- a circuit comprising: a second adjustment unit that adjusts the phase difference of the second clock signal to the second phase difference; and a data acquisition unit that receives the data by acquiring the first data signal at the change timing of the second clock signal.
- a first adjustment unit that adjusts the phase of at least one of the input clock signals and outputs the first data signal and the first clock signal in which the timing of the change points is matched, and delays the input clock signal for a specified time.
- a second adjustment unit that adjusts a phase difference of the second clock signal with respect to a signal to a desired phase difference, and the first data signal as the second clock.
- a circuit for receiving a signal from the device is provided by acquiring the signal at the timing of signal change.
- a circuit for receiving a signal having a device power, a reference clock generator for generating a reference clock, and a data signal output from the device for a specified time delay A first variable delay circuit that outputs a delayed data signal and a clock signal that is output by the device and that indicates a timing at which the data signal should be acquired is delayed by a specified time and is output as a first delayed clock signal.
- a variable delay circuit; a first flip-flop that acquires the delayed data signal at a timing based on the reference clock; a second flip-flop that acquires the first delayed clock signal at a timing based on the reference clock; 1 flip-flop and the second flip-flop include the delayed data signal and the first delayed clock.
- a first delay adjusting unit that adjusts a delay amount of at least one of the first variable delay circuit and the second variable delay circuit so that a signal is acquired at the timing of a signal change point, and a time that specifies the clock signal Delay
- a third variable delay circuit that outputs the second delayed clock signal as a second delay clock signal, and the first delayed clock signal whose phase is adjusted by the first delay adjusting unit as a result of obtaining the change timing of the second delayed clock signal.
- a second delay adjustment unit that adjusts a phase difference between the first delay clock signal and the second delay clock signal to a desired phase difference by adjusting a delay amount of the third variable delay circuit based on the second delay adjustment unit.
- a circuit for receiving a signal from the device is provided by acquiring the delayed data signal at a change timing of the second delayed clock signal.
- a first selection unit that selects which of the signal based on the reference clock and the second delayed clock signal is supplied to the first flip-flop and the second flip-flop is further provided.
- the first delay adjusting unit and the first variable delay circuit and the second variable delay in a state where the first selection unit is set to supply a signal based on the reference clock to the second flip-flop.
- the second delay adjusting unit adjusts the delay amount of the circuit, and the second variable delay unit sets the third variable delay in a state where the first selecting unit is set to supply the second delayed clock signal to the second flip-flop.
- a delay amount of the circuit is set, and the first flip-flop sets the first selection unit to supply the second delayed clock signal to the first flip-flop and the second flip-flop.
- the delayed data signal may be obtained at the change timing of the second delayed clock signal.
- the first delay adjustment unit may perform the first flip-flop and the second flip-flop a plurality of times while changing the delay amounts of the first variable delay circuit and the second variable delay circuit, respectively.
- the first variable delay circuit and the second variable delay are obtained by acquiring the data signal and the clock signal, and the number of times the data signal and the clock signal are acquired before and after the change.
- a delay amount of the circuit may be detected and set in the first variable delay circuit and the second variable delay circuit.
- the second delay adjustment unit may be configured such that the change timing of the second delay clock signal is positioned at a substantially middle point of the H level period or the L level period of the first delay clock signal. You can adjust the amount of delay.
- the third variable delay circuit includes an adjustment variable delay circuit for adjusting a phase of the second delay clock signal, and the delay data signal generated by the second delay clock signal.
- a variable delay circuit for strobe for changing the strobe position, and the second delay adjustment section sets the variable amount for adjustment in a state where a predetermined delay amount is set for the variable delay circuit for strobe.
- the phase difference between the first delay clock signal and the second delay clock signal is adjusted to a desired phase difference
- the first flip-flop includes the variable delay circuit for strobe Based on the result of obtaining the delayed data signal at the change timing of the second delayed clock signal while changing the delay amount of the second delayed clock signal, the delayed data signal is changed at the change timing of the second delayed clock signal. Get it.
- a test apparatus for testing a device under test, the data signal output from the device under test and the clock indicating the timing at which the input data signal should be acquired.
- a first adjustment unit that adjusts a phase difference with the signal to a first phase difference and outputs the first data signal and a first clock signal; and a phase difference specified for the first clock signal Based on the phase change unit that outputs the second clock signal and the first clock signal acquired at the change timing of the second clock signal, the position of the second clock signal relative to the first clock signal is determined.
- a second adjustment unit that adjusts the phase difference to the second phase difference, and the quality of the signal output by the device under test is determined.
- a test apparatus including a determination unit to be determined is provided.
- the test apparatus may receive the data signal and the clock signal from the device under test! /.
- the test apparatus further includes a clock recovery circuit that receives the data signal from the device under test and regenerates the clock signal from the received data signal, and the first adjustment unit includes the test target.
- the phase difference between the data signal received from the device and the clock signal reproduced by the clock reproduction circuit may be adjusted to the first phase difference and output as the first data signal and the first clock signal. Good.
- a test apparatus for testing a device under test, the data signal output from the device under test and the clock indicating the timing at which the data signal should be acquired. Adjust the phase of at least one of the signals to A first adjusting unit that outputs the combined first data signal and the first clock signal; a variable delay circuit that outputs the second clock signal after delaying the clock signal for a specified time; and A delay amount of the variable delay circuit is adjusted based on a result obtained at a change timing of the second clock signal, and a phase difference of the second clock signal with respect to the first clock signal is adjusted to a desired phase difference.
- a test apparatus comprising: an adjustment unit; and a determination unit that determines the quality of a signal output from the device under test based on a result obtained by acquiring the first data signal at a change timing of the second clock signal.
- FIG. 1 shows an overall configuration of a test apparatus 10.
- FIG. 2 shows a functional configuration of the comparator circuit 135.
- FIG. 3 shows a functional configuration of control device 150.
- FIG. 4 is a flowchart showing the flow of adjustment processing and test processing prior to testing.
- FIG. 5 is a flowchart showing a flow of a first delay adjustment process.
- FIG. 6 is a flowchart showing a flow of second delay adjustment processing.
- FIG. 7 is a timing chart of signals to be subjected to delay amount adjustment.
- FIG. 8 shows a configuration of functions for realizing data transfer between the first electronic device 80 and the second electronic device 85.
- FIG. 9 shows a functional configuration of the comparator circuit 810.
- FIG. 10 shows a functional configuration of control device 820.
- FIG. 11 shows a timing chart of signals subject to delay amount adjustment.
- test equipment 80 1st electronic device
- FIG. 1 shows the overall configuration of the test apparatus 10.
- the test apparatus 10 includes a timing generator 110, a non-turn generator 120, a waveform shaper 130, a driver circuit 132, a comparator circuit 135, a determination unit 140, and a control device 150, such as a semiconductor memory device.
- the timing generator 110 generates a reference clock such as a periodic clock and supplies it to the pattern generator 120.
- the non-turn generator 120 generates test pattern data input to the device under test 100, an address input to the device under test 100, and a control command input to the device under test 100 based on the periodic clock. Then, the pattern generator 120 outputs these data, address and command to the waveform shaper 130.
- the pattern generator 120 also outputs the test pattern data to the determination unit 140 as expected value data.
- the waveform shaper 130 shapes the received test pattern, address, and control command into a signal waveform that can be input to the device under test 100, and supplies the signal waveform to the device under test 100 via the driver circuit 132. .
- the comparator circuit 135 reads the data signal from the device under test 100. When the device under test 100 employs source synchronous clocking, the comparator circuit 135 may read the data signal in synchronization with the clock signal supplied from the device under test 100. Then, the determination unit 140 compares the data indicated by the read data signal with the expected value data input from the pattern generator 120. If the read data is equal to the expected value data, the determination unit 140 outputs a test result indicating that the device under test 100 is a non-defective product.
- the control device 150 performs various settings for the comparator circuit 135. Specifically, the control device 150 adjusts the delay amount of the variable delay circuit provided in the comparator circuit 135 so that the comparator circuit 135 can read out the data signal with high accuracy. The control device 150 switches the operation of the comparator circuit 135 according to whether or not the device under test 100 employs source-synchronous clocking.
- FIG. 2 shows a functional configuration of the comparator circuit 135.
- the comparator circuit 135 includes a reference clock generator 200, a clock recovery circuit 205, a first variable delay circuit 210, a second variable delay circuit 220, a first flip-flop 230, a second flip-flop 240, A third flip-flop 250, a fourth flip-flop 260, a third variable delay circuit 270, a first selector 280, a fourth variable delay circuit 285, a second selector 290, and a third selector 295.
- the reference clock generator 200 generates a reference clock for the test apparatus 10.
- the reference clock generator 20 0 is a comparator circuit that supplies a reference clock, such as the timing generator 110, which is also supplied with power. You may supply to each part of 5.
- the clock recovery circuit 205 regenerates the clock signal from the input data signal and supplies it to each unit as an input clock signal in case the device under test 100 adopts source synchronous clocking. To do.
- the first variable delay circuit 210 receives a data signal output from the device under test 100, delays the input data signal for a specified time, and outputs it as a delayed data signal.
- the second variable delay circuit 220 inputs a clock signal output from the device under test 100 indicating the timing at which the data signal should be acquired, and delays the input clock signal for a specified time as a first delayed clock signal. Output.
- the delay amounts of these variable delay circuits are set by a first delay adjustment unit 300 described later in the description of the control device 150.
- the first flip-flop 230 acquires the delayed data signal output from the first variable delay circuit 210 at a timing based on the reference clock.
- the signal acquisition timing may be delayed from the reference clock by the amount of delay by the fourth variable delay circuit 285.
- the second flip-flop 240 acquires the first delayed clock signal output from the second variable delay circuit 220 at a timing based on the reference clock.
- the second selection unit 290 selects either the data signal output from the device under test 100 or the delayed data signal output from the first flip-flop 230 and supplies the selected data signal to the third flip-flop 250.
- the third flip-flop 250 acquires the signal output from the second selection unit 290 at a timing based on the reference clock and supplies it to the determination unit 140.
- the third selection unit 295 selects one of the other data signal output from the device under test 100 and the first delayed clock signal output from the third selection unit 295, and sends it to the fourth flip-flop 260. Supply.
- the fourth flip-flop 260 acquires the signal output from the third selection unit 295 at a timing based on the reference clock and supplies the signal to the determination unit 140.
- the second selection unit 290 and the third selection unit 295 may receive a setting indicating which signal to select from the first delay adjustment unit 300, the second delay adjustment unit 310, and the test control unit 320, which will be described later.
- Third variable delay circuit 270 is an example of a phase changing unit according to the present invention, and generates a second delayed clock signal having a specified phase difference with respect to the clock signal output from device under test 100.
- the corresponding clock signal should be delayed by the specified time and output as the second delayed clock signal.
- the third variable delay circuit 270 determines the phase of the second delay clock signal.
- An adjustment variable delay circuit 275 for adjustment and a strobe variable delay circuit 272 for changing the strobe position of the delayed data signal by the second delay clock signal may be provided.
- the first selection unit 280 selects which of the signal based on the reference clock and the second delayed clock signal is supplied to the first flip-flop 230 and the second flip-flop 240.
- the fourth variable delay circuit 285 delays the reference clock by a designated delay amount and supplies the reference clock to the first selection unit 280.
- FIG. 2 illustrates a case where a test based on a single signal is performed for each of data and clock.
- the comparator circuit 135 for each of the data and the clock, has a first signal of a determination result indicating whether the logical value is true and a logical value is false.
- a determination result second signal indicating whether or not there may be generated.
- the first variable delay circuit 210 delays each of the first signal and the second signal for data.
- the second variable delay circuit 220 delays each of the first signal and the second signal for the clock.
- the first flip-flop 230 acquires a first signal and a second signal for data, respectively, and the second flip-flop 240 acquires a first signal and a second signal for a clock, respectively. According to such a configuration, it is possible to detect a transient state between the logical value “true” and the logical value “false”, and it is possible to widen the test nomination by the determination unit 140 in the subsequent stage.
- FIG. 3 shows a functional configuration of the control device 150.
- the control device 150 includes a first delay adjustment unit 300, a second delay adjustment unit 310, and a test control unit 320.
- the first delay adjustment unit 300 sets the first selection unit 280 so as to supply a signal based on the reference clock to the first flip-flop 230 and the second flip-flop 240.
- the first delay adjustment unit 300 sets the second selection unit 290 so that the signal output from the first flip-flop 230 is selected and supplied to the third flip-flop 250.
- the first delay adjustment unit 300 sets the third selection unit 295 so that the signal output from the second flip-flop 240 is selected and supplied to the fourth flip-flop 260.
- the first delay adjustment unit 300 adjusts the phase difference between the input data signal and the input clock signal to the first phase difference, so that the delayed data signal and the first delay clock (The delayed data signal is an example of the first data signal. is there. o
- the first delay adjustment unit 300 uses the first variable delay so that the first flip-flop 230 and the second flip-flop 240 acquire the delayed data signal and the first delayed clock signal at the timing of the signal change point.
- the delay amount of at least one of the circuit 210 and the second variable delay circuit 220 is adjusted.
- the first phase difference may be a phase difference of substantially 0, or may be greater than 0 and a predetermined phase difference! / ⁇ .
- first delay adjustment section 300 first changes first flip-flop 230 and second variable delay circuit 210 while changing the delay amounts of first variable delay circuit 210 and second variable delay circuit 220, respectively. Data signals and clock signals are acquired multiple times by flip-flop 240. Then, the first delay adjustment unit 300 includes the first variable delay circuit 210 and the second variable delay circuit 220 in which the values before and after the change of the data signal and the clock signal are acquired are substantially the same. The delay amount is detected and set in the first variable delay circuit 210 and the second variable delay circuit 220. Alternatively, the first delay adjustment unit 300 may adjust the delay amount of one of the first variable delay circuit 210 and the second variable delay circuit 220 and the fourth variable delay circuit 285.
- the first delay adjustment unit 300 performs the data signal multiple times by the first flip-flop 230 and the second flip-flop 240 while changing the delay amounts of the first variable delay circuit 210 and the fourth variable delay circuit 285, respectively. And get the clock signal. Then, the first delay adjustment unit 300 includes the first variable delay circuit 210 and the fourth variable delay circuit 285 in which the values before and after the change of the data signal and the clock signal are substantially the same. The delay amount may be detected and set in the first variable delay circuit 210 and the fourth variable delay circuit 285.
- the first delay adjustment unit 300 may detect the phase difference between the input data signal and the input clock signal using a phase difference comparator.
- a phase difference comparator inputs two signals and outputs the phase difference as a logical value or a voltage value.
- the first delay adjustment unit 300 compares the output value from the phase difference comparator with a predetermined reference value, and if the output value is greater than the reference value, the first variable delay circuit 210 and And the delay amount is increased for one of the second variable delay circuits 220, or the delay amount is decreased for the other.
- the first delay adjustment unit 300 reduces the delay amount for the one circuit when the output value is smaller than the reference value, or reduces the delay amount for the other circuit. increase.
- the phase comparison method does not have to be based on the number of data signal captures.
- Second delay adjustment section 310 receives notification from first delay adjustment section 300 that phase adjustment has been completed, and starts operation.
- the second delay adjustment unit 310 sets the first selection unit 280 to supply the second delay clock signal to the first flip-flop 230 and the second flip-flop 240. Further, the second delay adjustment unit 310 selects and maintains the second selection unit 290 so that the signal output from the first flip-flop 230 is selected and supplied to the third flip-flop 250. Also, the second delay adjustment unit 310 keeps the third selection unit 295 set so that the signal output from the second flip-flop 240 is selected and supplied to the fourth flip-flop 260.
- the second delay adjustment unit 310 obtains the first delay clock signal whose phase is adjusted by the first delay adjustment unit 300 at the change timing of the second delay clock signal. To adjust the delay amount of the third variable delay circuit 270. Then, the second delay adjustment unit 310 adjusts the phase difference between the first delay clock signal and the second delay clock signal to the second phase difference. In this way, the phase difference between the delayed data signal and the second delayed clock signal is adjusted to the phase difference obtained by adding the first phase difference and the second phase difference, and becomes the phase difference desired by the user.
- the second delay adjustment unit 310 sets the delay amount of the adjustment variable delay circuit 275 in a state where a predetermined delay amount is set for the strobe variable delay circuit 272.
- the timings of the changing points of the first delayed clock signal and the second delayed clock signal may be set to be substantially equal. If the delay caused by the strobe variable delay circuit 272 is reset to approximately 0 after this setting, a phase difference corresponding to the delay amount caused by the strobe variable delay circuit 272 is generated between the first delayed clock signal and the second delayed clock signal. Can be made.
- the test control unit 320 receives the notification that the phase adjustment is completed from the second delay adjustment unit 310 and starts the operation.
- the test control unit 320 keeps the first selection unit 280 set to supply the second delayed clock signal to the first flip-flop 230 and the second flip-flop 240.
- the test control unit 320 selects and maintains the second selection unit 290 so that the signal output from the first flip-flop 230 is selected and supplied to the third flip-flop 250. To do.
- the test control unit 320 keeps the third selection unit 295 set so that the signal output from the second flip-flop 240 is selected and supplied to the fourth flip-flop 260. In the state set in this way, the test control unit 320 sequentially takes in data signals output from the device under test 100.
- the test control unit 320 may further delay the second delay clock signal by adjusting the delay amount of the strobe variable delay circuit 272 and perform a timing test of the device under test 100. Thus, it is possible to test whether the device under test 100 can operate normally even if a signal delay within a predetermined reference range occurs.
- FIG. 4 is a flowchart showing the flow of adjustment processing and test processing prior to the test.
- the test apparatus 10 determines the type of the device under test 100 (S400).
- the type of device under test 100 may be set in advance in the test apparatus 10 based on the input by the engineer, or the test apparatus 10 automatically determines according to an identification signal output from the device under test 100 or the like. May be.
- the first delay adjustment unit 300 performs the first delay adjustment (S420).
- the first variable delay circuit 210 and the second flip-flop 230 and the second flip-flop 240 acquire the delayed data signal and the first delayed clock signal at the timing of the signal change point.
- variable delay circuit 220 is adjusted. This delay adjustment is realized by the first delay adjustment unit 300, the first variable delay circuit 210, and the second variable delay circuit 220, and these members cooperate to function as the first adjustment unit according to the present invention. In other words, these members cooperate to adjust the phase of at least one of the input data signal and clock signal, and output them as the first delayed data signal and the first delayed clock signal in which the timings of the change points are matched. To do.
- second delay adjustment section 310 performs second delay adjustment (S430).
- the third variable delay circuit 270 is adjusted so that the phase difference between the first delay clock signal and the second delay clock signal becomes a desired phase difference.
- the second delay adjustment unit 310 includes the third variable delay circuit so that the change timing of the second delay clock signal is positioned at approximately the midpoint of the H level period or the L level period of the first delay clock signal.
- the 270 delay amount may be adjusted.
- the phase of the second delayed clock signal is set to the strobe variable delay circuit 272, and the delay amount is set in the strobe variable data circuit. And can be tested for each strobe position relative to this phase.
- the test control unit 320 and the determination unit 140 perform a test process on the device under test 100 (S440). Specifically, first, the test control unit 320 keeps the first selection unit 280 set to supply the second delayed clock signal to the first flip-flop 230 and the second flip-flop 240. Further, the test control unit 320 adjusts the strobe position to various positions by adjusting the delay amount of the strobe variable delay circuit 272. Based on the result of obtaining the delayed data signal at the change timing of the second delay clock signal while changing the delay amount of the strobe variable delay circuit 272, the determination unit 140 determines whether the device under test 100 is good or bad. Determine.
- the determination unit 140 selects the signal output from the first flip-flop 230 by the second selection unit 290 and, as a result, compares the signal value output from the third flip-flop 250 with the expected value. Determine the quality of the signal output by the device under test 100.
- the test control unit 320 and the determination unit 140 perform test processing of the device under test (S450).
- This type of device under test outputs a first data signal and a second data signal instead of a data signal and a clock signal.
- the test control unit 320 causes the second selection unit 290 to select the first data signal and the third selection unit 295 to select the second data signal.
- the determination unit 140 determines the signal output from the device under test 100 based on the result of comparing the signal values output from the third flip-flop 250 and the fourth flip-flop 260 with the expected values. Judge the quality.
- FIG. 5 is a flowchart showing a flow of the first delay adjustment process.
- the first delay adjustment unit 300 sets the first selection unit 280 to supply a signal based on the reference clock to the first flip-flop 230 and the second flip-flop 240 (S500).
- the first delay adjustment unit 300 sets the second selection unit 290 so that the signal output from the first flip-flop 230 is selected and supplied to the third flip-flop 250.
- the first delay adjustment unit 300 The third selection unit 295 is set so that the signal output from the flip-flop 240 is selected and supplied to the fourth flip-flop 260.
- the first delay adjustment unit 300 performs the following processing to change the delay amount of at least one of the first variable delay circuit 210 and the second variable delay circuit 220.
- first delay adjustment section 300 sets a predetermined delay amount in at least one of first variable delay circuit 210 and second variable delay circuit 220 (S510). Specifically, the first variable delay circuit 210 delays the data signal output from the device under test 100 for a specified time and outputs it as a delayed data signal (S520). In addition, the second variable delay circuit 220 delays the clock signal indicating the timing at which the data signal is to be output, which is output from the device under test 100, by the specified time and outputs it as the first delay clock signal (S530). .
- the first flip-flop 230 acquires the delayed data signal at a timing based on the reference clock (S540).
- the second flip-flop 240 acquires the first delayed clock signal at a timing based on the reference clock (S550). The above processing is repeated until the number of acquisitions of the delayed data signal and the first delayed clock signal reaches a predetermined number (S560).
- the first delay adjustment unit 300 completes the phase adjustment of the delayed data signal and the first delayed clock signal. It is determined whether or not it is correct (S570). For example, the first delay adjustment unit 300 adjusts the phase of the delayed data signal and the first delay clock signal when the values before and after the change of the data signal and the clock signal are substantially the same. It may be determined that has been completed. If the phase adjustment has not been completed (S570: NO), the first delay adjustment unit 300 returns the process to S510 to change the delay amounts of the first variable delay circuit 210 and the second variable delay circuit 220. When the phase adjustment is completed (S570: YES), the processing in this figure ends.
- FIG. 6 is a flowchart showing the flow of the second delay adjustment process.
- the second delay adjustment unit 310 sets the first selection unit 280 to supply the second delayed clock signal to the first flip-flop 230 and the second flip-flop 240 (S600).
- the second delay adjustment unit 310 also outputs a signal output from the first flip-flop 230.
- the second selector 290 is set and maintained so that the signal is selected and supplied to the third flip-flop 250.
- the second delay adjustment unit 310 keeps the third selection unit 295 set so that the signal output from the second flip-flop 240 is selected and supplied to the fourth flip-flop 260.
- second delay adjustment section 310 sets a predetermined delay amount for strobe variable delay circuit 272 (S610). In this state, the second delay adjustment unit 310 performs the following processing to adjust the delay amount of the adjustment variable delay circuit 275.
- the second delay adjustment unit 310 sets a predetermined delay amount in the adjustment variable delay circuit 275 (S620).
- the second variable delay circuit 220 delays the clock signal indicating the timing at which the data signal is to be output, which is output from the device under test 100, by the specified time, and outputs it as the first delay clock signal (S630).
- the third variable delay circuit 270 delays the clock signal for a specified time and outputs it as a second delayed clock signal (S640).
- the second flip-flop 240 acquires the first delay clock signal at the timing specified by the second delay clock signal (S650). The above processing is repeated until the number of acquisitions of the first delayed clock signal reaches a predetermined number (S660).
- the second delay adjustment unit 310 determines whether or not the phase adjustment of the second delay clock signal is completed (S67). 0). For example, the second delay adjustment unit 310 determines that the phase adjustment of the second delay clock signal has been completed when the number of times the value before the change of the clock signal and the number of times after the change have been acquired are substantially the same. Also good. If the phase adjustment has not been completed (S670: NO), the second delay adjustment unit 310 returns the process to S610 to change the delay amount of the third variable delay circuit 270. When the phase adjustment is completed (S670: YES), the processing in this figure ends.
- FIG. 7 shows a timing chart of a signal to be subjected to delay amount adjustment.
- the data signal output by the device under test 100 is delayed by the first variable delay circuit 210 and output as a delayed data signal.
- the clock signal output by the device under test 100 is delayed by the second variable delay circuit 220 and output as the first delayed clock signal.
- the second delayed clock signal is adjusted to a desired phase difference from the first delayed clock signal by the third variable delay circuit 270.
- This second delayed clock signal is synchronized with the clock signal. Therefore, even when jitter occurs in the output signal of the device under test 100, the accuracy of the test can be maintained.
- the strobe delay is set to the minimum by the strobe variable delay circuit 272, the changing point of the second delay clock signal is advanced.
- the strobe delay is set to the maximum by the variable delay circuit for strobe 272
- the changing point of the second delay clock signal is delayed.
- the strobe position can be adjusted based on the clock signal output from the device under test 100, the accuracy of the pass / fail judgment in the timing test of the device under test 100 can be improved.
- FIG. 8 shows a configuration of functions for realizing data transfer between the first electronic device 80 and the second electronic device 85.
- the second electronic device 85 operates in synchronization with the other first electronic device 80 provided outside, and captures the signal output from the first electronic device 80 at an appropriate timing.
- the configuration will be described.
- the first electronic device 80 and the second electronic device 85 are shown as two devices provided separately, but the first electronic device 80 and the second electronic device 85 are the same instead.
- the second electronic device 85 may receive a signal from the first electronic device 80 on the same chip.
- the first electronic device 80 employs source-synchronous clocking, and outputs a clock signal and a data signal synchronized therewith to the second electronic device 85.
- the second electronic device 85 includes a receiving circuit 800 and a data processing unit 830.
- the receiving circuit 800 receives data from the first electronic device 80 by reading the input data signal in synchronization with the clock signal input from the first electronic device 80. Then, the data processing unit 830 performs processing based on the read data signal. If the first electronic device 80 power S source 'synchronous clocking is not adopted, the receiving circuit 800 obtains only the data signal from the first electronic device 80, and the clock signal is the other. It may be obtained from an external device or an internal clock generator. As an example, the receiving circuit 800 may generate a clock signal from a clock signal from a data signal and supply the clock signal to the comparator circuit 810 as a human power clock signal.
- the receiving circuit 800 includes a comparator circuit 810 and a control device 820.
- the comparator circuit 810 synchronizes with the clock signal input from the first electronic device 80 and receives the input data. Data signal. Then, the control device 820 performs various settings for the comparator circuit 810. Specifically, the control device 820 adjusts the delay amount of the variable delay circuit provided in the comparator circuit 810 so that the comparator circuit 810 can read out the data signal with high accuracy.
- FIG. 9 shows a functional configuration of the comparator circuit 810.
- the comparator circuit 810 includes a reference clock generator 900, a clock recovery circuit 905, a first variable delay circuit 910, a second variable delay circuit 920, a first flip-flop 930, a second flip-flop 940, 3 flip-flop 950, 4th flip-flop 960, 3rd variable delay circuit 970, 1st selection 980, 4th variable delay circuit 985, 2nd selection unit 990, 3rd selection unit 995 Have.
- the reference clock generator 900 generates a reference clock for the comparator circuit 810.
- the reference clock generator 900 may supply each part of the comparator circuit 810 with a reference clock supplied with power from an external device.
- the clock recovery circuit 905 recovers the input clock signal from the input data signal in case the first electronic device 80 employs source-synchronous clocking.
- the first variable delay circuit 910 delays the data signal output from the first electronic device 80 for a specified time and outputs it as a delayed data signal.
- the second variable delay circuit 920 outputs the clock signal output from the first electronic device 80 indicating the timing at which the data signal should be acquired as a first delayed clock signal with a specified time delay.
- variable delay circuits are set by a first delay adjustment unit 1000 described later in the description of the control device 820.
- the first flip-flop 930 is an example of the data acquisition unit according to the present invention, and acquires the delayed data signal output from the first variable delay circuit 910 at a timing based on the reference clock.
- the signal acquisition timing may be delayed from the reference clock by the amount of delay by the fourth variable delay circuit 985.
- the second flip-flop 940 acquires the first delay clock signal output from the second variable delay circuit 920 at a timing based on the reference clock.
- the second selection unit 990 selects either the data signal output from the first electronic device 80 or the delayed data signal output from the first flip-flop 930 and supplies it to the third flip-flop 950.
- the third flip-flop 950 acquires the signal output from the second selection unit 990 at a timing based on the reference clock, and controls the control device 820 and the data processing unit 83. Supply to 0.
- the third selection unit 995 selects one of the other data signal output from the first electronic device 80 and the first delayed clock signal output from the third selection unit 995, and outputs the fourth flip-flop 960. To supply.
- the fourth flip-flop 960 acquires the signal output from the third selection unit 995 at a timing based on the reference clock, and supplies the signal to the control device 820 and the data processing unit 830.
- Second selection unit 990 and third selection unit 995 may receive a setting indicating which signal to select from first delay adjustment unit 1000, second delay adjustment unit 1010, and test control unit 1020, which will be described later. Good.
- Third variable delay circuit 970 is an example of a phase change unit according to the present invention, and outputs a second delay clock signal having a designated phase difference with respect to the clock signal output from first electronic device 80.
- the clock signal to be generated is delayed by the specified time and output as the second delayed clock signal.
- the third variable delay circuit 970 may include an adjustment variable delay circuit 975 for adjusting the phase of the second delay clock signal.
- the third variable delay circuit 970 generates a second delayed clock signal delayed by a specified time compared to the incoming clock signal by generating a signal obtained by delaying the first delayed clock signal. May be.
- the first selection unit 980 selects which of the signal based on the reference clock and the second delayed clock signal is supplied to the first flip-flop 930 and the second flip-flop 940.
- the fourth variable delay circuit 985 delays the reference clock by a specified delay amount and supplies the reference clock to the first selection unit 980.
- the comparator circuit 810 for each of the data and the clock, has a first signal as a determination result indicating whether the logical value is true and the logical value is false.
- a determination result second signal indicating whether or not there may be generated.
- the first variable delay circuit 910 delays each of the first signal and the second signal for data.
- the second variable delay circuit 920 delays each of the first signal and the second signal for the clock.
- the first flip-flop 930 acquires a first signal and a second signal for data, respectively
- the second flip-flop 940 acquires a first signal and a second signal for a clock, respectively. According to such a configuration, the transient state between the logical value true and the logical value false. The state can be detected.
- FIG. 10 shows a functional configuration of control device 820.
- the control device 820 includes a first delay adjustment unit 1000, a second delay adjustment unit 1010, and a test control unit 1020.
- the first delay adjustment unit 1000 sets the first selection unit 980 to supply a signal based on the reference clock to the first flip-flop 930 and the second flip-flop 940.
- the first delay adjustment unit 1000 sets the second selection unit 990 so that the signal output from the first flip-flop 930 is selected and supplied to the third flip-flop 950.
- the first delay adjustment unit 1000 sets the third selection unit 995 so that the signal output from the second flip-flop 940 is selected and supplied to the fourth flip-flop 960.
- the first delay adjustment unit 1000 adjusts the phase difference between the input data signal and the input clock signal to the first phase difference to obtain the delayed data signal and the first delayed clock signal. Output.
- the first delay adjustment unit 1000 includes the first variable delay circuit 910 and the second flip-flop 930 and the second flip-flop 940 so that the delayed data signal and the first delayed clock signal are acquired at the timing of the signal change point.
- the delay amount of at least one of the second variable delay circuit 920 is adjusted.
- the first phase difference may be a phase difference of substantially 0, or may be greater than 0 and a predetermined phase difference! /.
- This delay adjustment is realized by the first delay adjustment unit 1000, the first variable delay circuit 910, and the second variable delay circuit 920, and these members cooperate to form the first adjustment unit according to the present invention. Function. That is, these members cooperate to adjust the phase of at least one of the input data signal and the input clock signal, and match the timing of the change point with the first delay data signal and the first delay clock. Output as a signal.
- first delay adjustment section 1000 changes first flip-flop 930 and first variable delay circuit 920 while changing the delay amounts of first variable delay circuit 910 and second variable delay circuit 920, respectively.
- the second flip-flop 940 obtains the data signal and clock signal multiple times.
- the first delay adjustment unit 1000 then delays the first variable delay circuit 910 and the second variable delay circuit 920 so that the number of times the values before and after the change of the data signal and the clock signal are acquired are substantially the same.
- the amount is detected and set in the first variable delay circuit 910 and the second variable delay circuit 920.
- the first delay adjustment unit 1000 uses the first variable delay unit.
- the delay amount of one of the extension circuit 910 and the second variable delay circuit 920 and the fourth variable delay circuit 985 may be adjusted.
- the first delay adjustment unit 1000 changes the data amount and the number of times by the first flip-flop 930 and the second flip-flop 940 while changing the delay amounts of the first variable delay circuit 910 and the fourth variable delay circuit 985, respectively. Get the clock signal. Then, the first delay adjustment unit 1000 receives the delay of the first variable delay circuit 910 and the fourth variable delay circuit 985 in which the values before and after the change of the data signal and the clock signal are acquired are substantially the same. The amount may be detected and set in the first variable delay circuit 910 and the fourth variable delay circuit 985.
- the first delay adjustment unit 1000 may detect the phase difference between the input data signal and the input clock signal using a phase difference comparator.
- a phase difference comparator inputs two signals and outputs the phase difference as a logical value or a voltage value.
- the first delay adjustment unit 1000 compares the output value from the phase difference comparator with a predetermined reference value, and if the output value is greater than the reference value, the first variable delay circuit 910 and the first delay circuit 910 2 Increase the delay amount for one of the variable delay circuits 920, or decrease the delay amount for the other.
- the first delay adjustment unit 1000 decreases the delay amount for the one circuit when the output value is smaller than the reference value, or increases the delay amount for the other circuit.
- the phase comparison method should not be based on the number of data signal acquisitions.
- the second delay adjustment unit 1010 receives the notification that the phase adjustment has been completed and receives the first delay adjustment unit 1000 to start the operation.
- the second delay adjustment unit 1010 sets the first selection unit 980 to supply the second delay clock signal to the first flip-flop 930 and the second flip-flop 940. Further, the second delay adjustment unit 1010 keeps the second selection unit 990 set so that the signal output from the first flip-flop 930 is selected and supplied to the third flip-flop 950.
- the second delay adjustment unit 1010 keeps the third selection unit 995 set so that the signal output from the second flip-flop 940 is selected and supplied to the fourth flip-flop 960.
- the second delay adjustment unit 1010 obtains the first delay clock signal whose phase is adjusted by the first delay adjustment unit 1000 by the change timing of the second delay clock signal. Based on this, the delay amount of the third variable delay circuit 970 is adjusted. And The second delay adjustment unit 1010 adjusts the phase difference between the first delay clock signal and the second delay clock signal to the second phase difference. In this way, the phase difference between the delayed data signal and the second delayed clock signal is adjusted to the phase difference obtained by adding the first phase difference and the second phase difference, and the phase difference desired by the user is obtained. .
- the test control unit 1020 starts the operation upon receiving a notification from the second delay adjustment unit 1010 that the phase adjustment has been completed.
- the test control unit 1020 keeps the first selection unit 980 set to supply the second delayed clock signal to the first flip-flop 930 and the second flip-flop 940.
- the test control unit 1020 selects and maintains the second selection unit 990 so that the signal output from the first flip-flop 930 is selected and supplied to the third flip-flop 950.
- the test control unit 1020 keeps the third selection unit 995 set so that the signal output from the second flip-flop 940 is selected and supplied to the fourth flip-flop 960. In the state set in this way, the test control unit 1020 sequentially takes in data signals output from the first electronic device 80.
- the first flip-flop 930 can receive data from the first electronic device 80 by acquiring the delayed data signal at the change timing of the second delayed clock signal.
- the delayed data signal is received by the first flip-flop 930. If it is received by the change timing of the second delayed clock signal, other flip-flops other than the first flip-flop 930 are delayed. You can get the data signal.
- FIG. 11 shows a timing chart of a signal that is a target of delay amount adjustment.
- the data signal output from the first electronic device 80 is delayed by the first variable delay circuit 910 and output as a delayed data signal.
- the clock signal output by the first electronic device 80 is delayed by the second variable delay circuit 920 and output as the first delayed clock signal.
- the second delayed clock signal is adjusted by the third variable delay circuit 970 to a desired phase difference from the first delayed clock signal. For example, as shown in the figure, if the rising timing of the second delayed clock signal is the timing after the delayed data signal rises and stabilizes, the delayed data signal can be reliably captured.
- the second delayed clock signal is synchronized with the clock signal, there is a high possibility that the second delayed clock signal is also synchronized with the delayed data signal, and even if jitter occurs in the output signal of the first electronic device 80, the data Signal Can be taken in reliably.
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Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
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| EP07708369A EP2015089A4 (en) | 2006-05-01 | 2007-02-14 | TESTER, SWITCHING AND ELECTRONIC DEVICE |
| JP2007514937A JP4944771B2 (ja) | 2006-05-01 | 2007-02-14 | 試験装置、回路および電子デバイス |
| US11/759,240 US7557561B2 (en) | 2006-05-01 | 2007-06-07 | Electronic device, circuit and test apparatus |
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| JPPCT/JP2006/309097 | 2006-05-01 | ||
| PCT/JP2006/309097 WO2007129386A1 (ja) | 2006-05-01 | 2006-05-01 | 試験装置および試験方法 |
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| US11/759,240 Continuation US7557561B2 (en) | 2006-05-01 | 2007-06-07 | Electronic device, circuit and test apparatus |
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| WO2007129491A1 true WO2007129491A1 (ja) | 2007-11-15 |
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| PCT/JP2007/052565 Ceased WO2007129491A1 (ja) | 2006-05-01 | 2007-02-14 | 試験装置、回路および電子デバイス |
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| PCT/JP2006/309097 Ceased WO2007129386A1 (ja) | 2006-05-01 | 2006-05-01 | 試験装置および試験方法 |
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| US (3) | US7512872B2 (ja) |
| EP (2) | EP2026081A4 (ja) |
| JP (1) | JP3920318B1 (ja) |
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| WO (2) | WO2007129386A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010087009A1 (ja) * | 2009-01-30 | 2010-08-05 | 株式会社アドバンテスト | 電子デバイス、試験装置および試験方法 |
| WO2025111411A1 (en) * | 2023-11-21 | 2025-05-30 | Microsemi SoC Corporation | Device and method for signal retiming |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040023381A (ko) * | 2002-09-11 | 2004-03-18 | 이문기 | 견과류를 첨가한 소시지의 제조방법 |
| JP4469753B2 (ja) * | 2005-04-28 | 2010-05-26 | 株式会社アドバンテスト | 試験装置 |
| WO2006129491A1 (ja) * | 2005-06-01 | 2006-12-07 | Advantest Corporation | ジッタ発生回路 |
| US8121237B2 (en) | 2006-03-16 | 2012-02-21 | Rambus Inc. | Signaling system with adaptive timing calibration |
| TWI316329B (en) * | 2006-04-26 | 2009-10-21 | Realtek Semiconductor Corp | Phase selector, data receiving device, data transmitting device utilizing phase selector and clock-selecting method |
| US7669090B2 (en) * | 2006-05-18 | 2010-02-23 | Kabushiki Kaisha Toshiba | Apparatus and method for verifying custom IC |
| DE112007001946T5 (de) * | 2006-08-16 | 2009-07-02 | Advantest Corp. | Lastschwankung-Kompensationsschaltung, elektronische Vorrichtung, Prüfvorrichtung, Taktgeneratorschaltung und Lastschwankungs-Kompensationsverfahren |
| US7539592B2 (en) * | 2007-03-23 | 2009-05-26 | Advantest Corporation | Test apparatus and electronic device |
| US8264906B2 (en) * | 2007-05-29 | 2012-09-11 | Rambus Inc. | Adjusting clock error across a circuit interface |
| US8094766B2 (en) * | 2008-07-02 | 2012-01-10 | Teradyne, Inc. | Tracker circuit and method for automated test equipment systems |
| JP5171442B2 (ja) * | 2008-07-08 | 2013-03-27 | 株式会社アドバンテスト | マルチストローブ回路および試験装置 |
| CN102099700A (zh) * | 2008-08-01 | 2011-06-15 | 株式会社爱德万测试 | 测试装置 |
| JP2010169480A (ja) * | 2009-01-21 | 2010-08-05 | Elpida Memory Inc | 半導体デバイス試験装置及び半導体装置 |
| US8274272B2 (en) * | 2009-02-06 | 2012-09-25 | Advanced Micro Devices, Inc. | Programmable delay module testing device and methods thereof |
| US8258775B2 (en) * | 2009-04-15 | 2012-09-04 | Via Technologies, Inc. | Method and apparatus for determining phase error between clock signals |
| CN102053222A (zh) * | 2009-11-05 | 2011-05-11 | 上海华虹Nec电子有限公司 | 利用半导体测试仪读取芯片信息的方法 |
| JP5448795B2 (ja) * | 2009-12-25 | 2014-03-19 | キヤノン株式会社 | 情報処理装置又は情報処理方法 |
| JP2012247317A (ja) | 2011-05-27 | 2012-12-13 | Advantest Corp | 試験装置および試験方法 |
| JP2012247319A (ja) * | 2011-05-27 | 2012-12-13 | Advantest Corp | 試験装置および試験方法 |
| JP2012247316A (ja) * | 2011-05-27 | 2012-12-13 | Advantest Corp | 試験装置および試験方法 |
| JP2013007710A (ja) * | 2011-06-27 | 2013-01-10 | Advantest Corp | 試験装置および試験方法 |
| TWI461717B (zh) * | 2012-11-05 | 2014-11-21 | Realtek Semiconductor Corp | 掃描時脈產生器以及掃描時脈產生方法 |
| US9178685B1 (en) * | 2013-12-27 | 2015-11-03 | Altera Corporation | Techniques to determine signal timing |
| JP6273856B2 (ja) * | 2014-01-24 | 2018-02-07 | 富士通株式会社 | メモリコントローラ及び情報処理装置 |
| CN106330181B (zh) * | 2015-07-02 | 2019-05-21 | 无锡华润上华科技有限公司 | 延迟锁定环的检测方法和系统 |
| KR20240074213A (ko) * | 2022-11-21 | 2024-05-28 | 삼성전자주식회사 | 초고속 송신기 및 이를 포함하는 스토리지 장치 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201532A (ja) * | 2000-01-18 | 2001-07-27 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2001356153A (ja) * | 2000-06-14 | 2001-12-26 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2002025294A (ja) * | 2000-07-06 | 2002-01-25 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2003121501A (ja) * | 2001-10-11 | 2003-04-23 | Advantest Corp | 半導体デバイス試験方法及び半導体デバイス試験装置 |
| JP2004325410A (ja) * | 2003-04-28 | 2004-11-18 | Toshiba Corp | 入出力回路 |
| JP2005285160A (ja) * | 2004-03-26 | 2005-10-13 | Advantest Corp | 試験装置及び試験方法 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5578935A (en) | 1995-05-25 | 1996-11-26 | Texas Instruments Incorporated | Undersampling digitizer with a sampling circuit positioned on an integrated circuit |
| US6263463B1 (en) * | 1996-05-10 | 2001-07-17 | Advantest Corporation | Timing adjustment circuit for semiconductor test system |
| US6360343B1 (en) * | 1999-02-26 | 2002-03-19 | Advantest Corp. | Delta time event based test system |
| JP4118463B2 (ja) * | 1999-07-23 | 2008-07-16 | 株式会社アドバンテスト | タイミング保持機能を搭載したic試験装置 |
| DE10048895A1 (de) * | 1999-10-01 | 2001-06-13 | Schlumberger Technologies Inc | Testverfahren und -vorrichtung für quellensynchrone Signale |
| TWI238256B (en) * | 2000-01-18 | 2005-08-21 | Advantest Corp | Testing method for semiconductor device and its equipment |
| US6760873B1 (en) * | 2000-09-28 | 2004-07-06 | Lsi Logic Corporation | Built-in self test for speed and timing margin for a source synchronous IO interface |
| US7313715B2 (en) * | 2001-02-09 | 2007-12-25 | Samsung Electronics Co., Ltd. | Memory system having stub bus configuration |
| US6952790B2 (en) * | 2001-03-30 | 2005-10-04 | Intel Corporation | System for varying timing between source and data signals in a source synchronous interface |
| DE10296952B4 (de) * | 2001-06-13 | 2007-07-19 | Advantest Corp. | Vorrichtung und Verfahren zum Prüfen einer Halbleitervorrichtung |
| JP4279489B2 (ja) * | 2001-11-08 | 2009-06-17 | 株式会社アドバンテスト | タイミング発生器、及び試験装置 |
| JP4002811B2 (ja) * | 2002-10-04 | 2007-11-07 | 株式会社アドバンテスト | マルチストローブ生成装置、試験装置、及び調整方法 |
| US7363563B1 (en) * | 2003-12-05 | 2008-04-22 | Pmc-Sierra, Inc. | Systems and methods for a built in test circuit for asynchronous testing of high-speed transceivers |
| WO2005066646A1 (ja) * | 2004-01-09 | 2005-07-21 | Advantest Corporation | タイミングクロック校正方法 |
| US7075285B2 (en) * | 2004-05-12 | 2006-07-11 | Richard Chin | Delay locked loop circuit and method for testing the operability of the circuit |
| JP4536610B2 (ja) * | 2005-07-07 | 2010-09-01 | 株式会社アドバンテスト | 半導体試験装置 |
| US7366966B2 (en) * | 2005-10-11 | 2008-04-29 | Micron Technology, Inc. | System and method for varying test signal durations and assert times for testing memory devices |
-
2006
- 2006-05-01 JP JP2006539163A patent/JP3920318B1/ja active Active
- 2006-05-01 EP EP06745948A patent/EP2026081A4/en not_active Withdrawn
- 2006-05-01 WO PCT/JP2006/309097 patent/WO2007129386A1/ja not_active Ceased
- 2006-05-01 KR KR1020067023953A patent/KR101228270B1/ko active Active
- 2006-11-16 US US11/600,676 patent/US7512872B2/en active Active
-
2007
- 2007-02-14 EP EP07708369A patent/EP2015089A4/en not_active Withdrawn
- 2007-02-14 WO PCT/JP2007/052565 patent/WO2007129491A1/ja not_active Ceased
- 2007-06-07 US US11/759,240 patent/US7557561B2/en not_active Expired - Fee Related
-
2009
- 2009-02-19 US US12/388,802 patent/US7707484B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001201532A (ja) * | 2000-01-18 | 2001-07-27 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2001356153A (ja) * | 2000-06-14 | 2001-12-26 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2002025294A (ja) * | 2000-07-06 | 2002-01-25 | Advantest Corp | 半導体デバイス試験方法・半導体デバイス試験装置 |
| JP2003121501A (ja) * | 2001-10-11 | 2003-04-23 | Advantest Corp | 半導体デバイス試験方法及び半導体デバイス試験装置 |
| JP2004325410A (ja) * | 2003-04-28 | 2004-11-18 | Toshiba Corp | 入出力回路 |
| JP2005285160A (ja) * | 2004-03-26 | 2005-10-13 | Advantest Corp | 試験装置及び試験方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2015089A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010087009A1 (ja) * | 2009-01-30 | 2010-08-05 | 株式会社アドバンテスト | 電子デバイス、試験装置および試験方法 |
| WO2025111411A1 (en) * | 2023-11-21 | 2025-05-30 | Microsemi SoC Corporation | Device and method for signal retiming |
Also Published As
| Publication number | Publication date |
|---|---|
| US7557561B2 (en) | 2009-07-07 |
| KR20090027263A (ko) | 2009-03-17 |
| EP2015089A4 (en) | 2010-09-22 |
| US7512872B2 (en) | 2009-03-31 |
| WO2007129386A1 (ja) | 2007-11-15 |
| US20080120059A1 (en) | 2008-05-22 |
| US20090158103A1 (en) | 2009-06-18 |
| EP2026081A1 (en) | 2009-02-18 |
| EP2015089A1 (en) | 2009-01-14 |
| JP3920318B1 (ja) | 2007-05-30 |
| KR101228270B1 (ko) | 2013-01-30 |
| US20070262800A1 (en) | 2007-11-15 |
| JPWO2007129386A1 (ja) | 2009-09-17 |
| US7707484B2 (en) | 2010-04-27 |
| EP2026081A4 (en) | 2010-10-06 |
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