JP4473304B2 - Transceiver module and transceiver system - Google Patents

Description

  The present invention relates to a transceiver module and a transceiver system, and more particularly to a transceiver module and a transceiver system that can satisfy the Ethernet (registered trademark) specification with a maximum transfer rate of 10 Gbps.

  In recent years, with the development of the information society, further improvement in communication speed and further extension of transmission distance are required. Due to such demands, signals exchanged on the network are changing from electricity to light.

  As a communication device using an optical signal and realizing large capacity and high speed communication, for example, there is an optical transceiver module disclosed in Patent Document 1 shown below. FIG. 1 shows a configuration of an optical transceiver module 900 according to the prior art.

  As shown in FIG. 1, an optical transceiver module 900 includes a housing 901, a bezel 902, two optical connectors 903, a PCB (Printed Circuit Board) connector 904, and a rail 905. A rail 905 is attached to an information processing apparatus (hereinafter referred to as a host apparatus) such as a switch or a router.

  The PCB connector 904 is a so-called card edge type connector, and is directly connected to a motherboard (also referred to as a system board) of the information processing apparatus. The PCB connector 904 is configured to conform to, for example, an industry standard XAUI (10 Gigabit Attachment Unit Interface). In other words, in this prior art, the optical transceiver module 900 and the information processing apparatus are connected by XAUI.

A transmitter and a receiver (not shown) are provided inside the housing 901. Therefore, data input from the information processing apparatus is returned to an optical signal in the transmitter, and then transmitted to an optical cable (not shown) connected to the optical connector 903. An optical signal input from the optical cable is returned to an electrical signal in the receiver and then input to the information processing apparatus via the PCB connector 904.
JP 2002-328269 A

  However, communication devices for transmitting and receiving optical signals, such as the transmitter and receiver described above, are generally more expensive than communication devices for transmitting and receiving electrical signals, and there is a problem of lack of versatility. .

  On the other hand, when a system such as a LAN (Local Area Network) or a WAN (Wide Area Network) is constructed, if information processing devices such as server devices are installed in a concentrated area inside the building, it is not necessarily realized by optical communication. However, there is a case where it is possible to cope with telecommunications sufficiently.

  An object of the present invention is to provide a transceiver module and a transceiver system capable of realizing a transceiver module that can handle both an optical cable and an electric cable by a single unit and can supply power as needed. .

To achieve this object, a transceiver module according to the present invention is connected to an information processing apparatus as described in claim 1, and is a transceiver module for transmitting and receiving data between the information processing apparatus and another device. A balanced transmission cable having a plurality of signal terminals, a plurality of ground terminals, and a wire cable connected to these terminals and connected to the other device, a plurality of signal terminals, and a plurality of ground terminals A photoelectric conversion unit that performs photoelectric conversion between an optical signal and an electrical signal communicated via these terminals, an optical cable socket to which the photoelectric conversion unit is attached, and an optical cable that is inserted into the optical cable socket A balanced transmission connector capable of selectively connecting a balanced transmission connector for an optical cable connected to the other device; A detector cable connected to衡transmission connector is for detecting whether a said electric cable as or the optical cable, wherein when a cable is detected by the detection unit is the optical cable, the photoelectric conversion portion When the cable detected by the detection unit is the wire cable, the power supply unit does not supply power to the other device . By configuring whether the cable connected to the balanced transmission connector is an electric cable or an optical cable, it is possible to handle both the optical cable and the electric cable with a single unit, and supply power as necessary. A transceiver module capable of being implemented.

  Further, in the transceiver module according to claim 1, for example, as described in claim 2, the detection unit inputs a differential circuit composed of two comparators and different reference voltages to the two comparators, respectively. A plurality of resistors, and an AND circuit that outputs a high or low level to the power supply unit in accordance with outputs from the two comparators, and a plurality of ground terminals included in the balanced transmission cable Or a potential applied to any one of a plurality of ground terminals included in the balanced transmission connector for an optical cable and a different reference voltage input to the two comparators, It may be configured to detect whether the cable connected to the balanced transmission connector is the electric cable or the optical cable.

Further, in the transceiver module according to claim 1, for example, as in claim 3, the power supply unit is connected to the photoelectric conversion unit via any one of a plurality of ground terminals of the balanced transmission connector for optical cable. It may be configured to supply power.

  Further, in the transceiver module according to claim 1, for example, as in claim 4, a part of the photoelectric conversion unit and the optical cable socket are exposed outside the housing of the balanced transmission connector for the optical cable. It may be configured.

A transceiver system according to the present invention is a transceiver module connected to an information processing apparatus for transmitting and receiving data between the information processing apparatus and another device, and having a plurality of signal terminals. A balanced transmission cable having a plurality of ground terminals and a wire cable connected to these terminals and connected to the other device, a plurality of signal terminals, a plurality of ground terminals, and communication via these terminals A photoelectric conversion unit that performs photoelectric conversion between an optical signal and an electrical signal, an optical cable socket to which the photoelectric conversion unit is attached, and an optical cable that is plugged into the optical cable socket and connected to the other device A balanced transmission connector that can be selectively connected to a balanced transmission connector for an optical cable, and a cable connected to the balanced transmission connector. Detection unit table to detect whether the electric wire cable as or the optical cable, and wherein when the detected cable by the detection unit is the optical cable supplies power to the photoelectric conversion unit, the detection When the cable detected by the unit is the wire cable, a transceiver module having a power supply unit that does not supply power to the other device , and a balanced transmission cable or an optical cable connectable to the balanced transmission connector And a balanced transmission connector.

  According to the present invention, it is possible to realize a transceiver module and a transceiver system capable of realizing a transceiver module that can handle both an optical cable and an electric cable and can supply power as necessary. .

  Hereinafter, the best mode for carrying out the present invention will be described in detail with reference to the drawings.

  First, the transceiver module 100 according to the first embodiment of the present invention will be described in detail with reference to the drawings. The present embodiment particularly relates to a transceiver module that can satisfy the Ethernet (registered trademark) specification having a maximum transfer rate of 10 Gbps. This transceiver module is configured to be connected to a balanced transmission cable 150 (see FIG. 5), which will be described later, and enables data transmission / reception between information processing devices such as server devices and network / communication devices (host devices) Is to do. However, the present invention is not limited to this, and it goes without saying that various modifications can be made without departing from the gist thereof.

  FIG. 2 is a perspective view showing an external schematic configuration of the transceiver module 100 according to the present embodiment. As shown in FIG. 2, the transceiver module 100 includes a housing 101, a bezel 102, a balanced transmission connector 103, a PCB terminal 104, and a ground terminal 106.

  The housing 101 accommodates a printed circuit board (hereinafter abbreviated as PCB) on which an internal circuit described later is mounted. The PCB 113 (see FIG. 6) and internal circuits will be described later together with FIG.

  The bezel 102 is an external housing provided on one surface of the housing 101, particularly a surface exposed to the outside of the information processing apparatus main body when the transceiver module 100 is mounted on the information processing apparatus. This is also called a front bezel. In the following description, the information processing apparatus is referred to as a host apparatus. In the following description, as shown in FIG. 2, the insertion direction of the transceiver module 100 is the Y direction, the direction perpendicular to this and parallel to the plane of the PCB 113 is the X direction, and the X direction and the Y direction. A direction perpendicular to the Z direction is taken as a Z direction.

  A balanced transmission connector 103 for docking with the balanced transmission cable 150 (see FIG. 5) is provided at the center of the bezel 102. In other words, the balanced transmission connector 103 is configured such that the balanced transmission cable 150 is detachable. The balanced transmission connector 103 can be configured to conform to an interface standardized by, for example, IEEE 802.3z 10GBASE-CX4. Details of this shape will be described later.

  A part of the PCB 113 on which the internal circuit is mounted protrudes from the housing 101. The protruding portion is provided with a PCB terminal 104 for electrically connecting the transceiver module 100 and the host device. The PCB terminal 104 is a so-called card edge connector, and can be attached to and detached from a connector provided on a motherboard in the host device. That is, by inserting the transceiver module 100 into a predetermined slot of the host device, the connector provided on the motherboard and the PCB terminal 104 of the transceiver module 100 have an electrical contact. Such a PCB terminal 104 can be configured to conform to, for example, XAUI (10 Gigabit Attachment Unit Interface) provided by IEEE 802.3ae.

  Similarly to the PCB terminal 104, the ground terminal 106 is electrically connected to a ground line provided in the host device when the transceiver module 100 is inserted into the host device. As a result, the housing 101 and other members can be grounded.

  Next, details of the external configuration of the transceiver module 100 will be described with reference to the drawings. 3A is a top view of the transceiver module 100 (outside view when viewed in the −Z direction), and FIG. 3B is a side view thereof (outside view when viewed in the X direction). FIG. 3C is a bottom view (outside view when viewed in the Z direction). 4A is a front view of the transceiver module 100 (appearance view when viewed in the Y direction), and FIG. 4B is a rear view thereof (appearance view when viewed in the −Y direction). FIG. 4C is a cross-sectional view taken along the line AA.

  As is clear from FIGS. 3A to 3C and FIGS. 4A to 4C, the transceiver module 100 is balanced with the first housing 111, the second housing 112, the PCB 113, and the bezel 102. A transmission connector 103, a PCB terminal 104, a ground terminal 106, a rail 117, an assembly screw 119, and a fixing screw 120 are provided.

  The first casing 111 and the second casing 112 are casings forming the housing 101 in FIG. The PCB 113 is housed inside the assembly. The PCB 113 is a board on which an internal circuit is mounted as described above.

  In addition, the second casing 112 is provided with a rail 117 parallel to the insertion direction of the transceiver module 100 into the host device. On the other hand, a rail groove that engages with the rail 117 is provided in the slot of the host device into which the transceiver module 100 is inserted. Therefore, at the time of insertion, the rail 117 slides in the rail groove, whereby the transceiver module 100 is guided to a normal position, and the PCB terminal 104 is inserted into a connector provided at the bottom of the slot of the host device.

  The fixing screw 120 is a screw for fixing the transceiver module 100 to the host device when the transceiver module 100 is inserted into the host device. That is, a screw hole is provided at a predetermined position of the host device. The transceiver module 100 is inserted into a predetermined slot of the host device, and the fixing screw 120 is turned into the screw hole, whereby the transceiver module 100 is inserted into the host device. Can be fixed to.

  Since the bezel 102, the balanced transmission connector 103, the PCB terminal 104, and the ground terminal 106 are the same as described above, the description thereof is omitted here. The assembly screw 119 will be described later with reference to FIG.

  Next, the configuration of the balanced transmission cable 150 docked with the balanced transmission connector 103 will be described with reference to FIG. As shown in FIG. 5, the balanced transmission cable 150 includes a housing 151, a balanced transmission connector main body 152, a balanced transmission plug (female) 153, an electric cable 154, and an engaging groove 155. The engagement groove 155 will be described later.

  The balanced transmission connector main body 152 is incorporated on the distal end side (transceiver module 100 side) of the housing 151, and a balanced transmission plug (female) 153 projects from the distal end of the housing 151. An electric cable 154 extends from the rear end of the housing 151.

  The balanced transmission plug (female) 153 is a connector portion configured to be combined with the above-described balanced transmission connector 103 (particularly, the balanced transmission plug (male) 130). Therefore, the balanced transmission plug (female) 153 can be configured to conform to an interface defined by, for example, 10GBASE-CX4, which is a standard of IEEE802.3z.

  Next, another configuration of the transceiver module 100 will be described in detail with reference to an exploded view shown in FIG.

  As shown in FIG. 6, the transceiver module 100 includes first and second housings 111 and 112, a PCB 113, a balanced transmission connector 103, a bezel 102, and an inner cover 118.

  The PCB 113 on which the internal circuit is mounted has a hole 116. The second housing 112 has a screw hole 123. The PCB 113 is fixed at a predetermined position of the second housing 112 by an assembly screw 115. After being fixed in this manner, the opening side of the second housing 112 is sealed by the first housing 111, so that the PCB 113 is housed inside the housing 101.

  Also, as described above, the PCB terminal 104 is formed at one end of the PCB 113, that is, the end inserted into the PC. On the other hand, the other end of the PCB 113, that is, the end where the balanced transmission connector 103 is provided is formed with an internal terminal 114 for having an electrical contact with the metal pattern.

  The balanced transmission connector 103 is a unit provided with a balanced transmission plug (male) 130 to be combined with the balanced transmission plug (female) 153. Therefore, by inserting the balanced transmission plug (male) 130 into the balanced transmission plug (female) 153, an electrical contact with the metal pattern provided on the balanced transmission plug (female) 153 is formed.

  After assembling the first and second housings 111 and 112, the PCB 113, and the balanced transmission connector 103 as described above, the balanced transmission connector 103 side is sealed by the bezel 102. The bezel 102 is provided with a hole 121. The second housing 112 is provided with a screw hole 122. The bezel 102 is fixed at a predetermined position of the second housing 112 by an assembly screw 119. At this time, by arranging the inner cover 118 between the bezel 102 and the second housing 112, it is possible to prevent the ingress of dust or improve the strength.

  Further, the rail 117 for guiding the transceiver module 100 to the regular position is provided with the ground terminal 106 as described above. On the other hand, the rail groove of the host device described above also functions as a ground line. Thereby, at the time of mounting, the configuration connected to the ground terminal 106 is grounded.

  In addition, as described above, holes 124 are provided in at least two places of the bezel 102. On the other hand, screw holes are provided at positions aligned with the holes 124 in the host device. Therefore, the transceiver module 100 can be fixed to the host device by inserting the hole 124 into the fixing screw 120 and turning the fixing screw 120 around the screw hole of the host device.

  Next, the configuration of the balanced transmission connector 103 according to this embodiment will be described with reference to FIG. 7A is a perspective view of the balanced transmission connector 103, FIG. 7B is a front view thereof (appearance view when viewed in the -Z direction), and FIG. 7C is a side view thereof. FIG. 7D is a rear view thereof (appearance view when viewed in the Z direction).

  As illustrated in FIGS. 7A to 7D, the balanced transmission connector 103 includes a balanced transmission plug (male) 130, an engaging claw 131, a fixing portion 132, and an internal terminal 133.

  As described above, the balanced transmission plug (male) 130 is a part for docking with the balanced transmission plug (female) 153 of the balanced transmission cable 150 to form an electrical contact. The engaging claw 131 is a member for fixing the balanced transmission cable 150 to the transceiver module 100 by engaging with the engaging groove 155 of the balanced transmission cable 150. The fixing portion 132 is a member for positioning the balanced transmission connector 103 with respect to the housing 101 including the first and second casings 111 and 112 and fixing the same. The internal terminal 133 is a member for forming an electrical connection by contacting the internal terminal 114 of the PCB 113.

  Further, another configuration example of the balanced transmission connector 103 is shown in FIG. The configuration shown in FIG. 8 is substantially the same as the configuration shown in FIG. 7, but the shape of the fixing portion 132A is different from the shape of the fixing portion 132 shown in FIG. Thus, the balanced transmission connector 103 can be implemented with various modifications.

  Next, a circuit configuration of the transceiver module 100, that is, a configuration of an internal circuit mounted on the PCB 113 will be described with reference to the drawings.

  FIG. 9 is a block diagram illustrating a circuit configuration of the transceiver module 100. As shown in FIG. 9, the transceiver module 100 includes a retimer 11, a control unit 12, a reference clock generation unit 13, a power supply unit 14, and a CX4 interface 15, via an XAUI (10 Gigabit Attachment Unit Interface) interface 22. In addition to being connected to the transmission / reception unit (Tx / Rx) 21 of the host device, it is connected to another device connected to one end of the balanced transmission cable 150 via the CX4 interface 15. Note that the retimer 11, the control unit 12, the reference clock generation unit 13, the power supply unit 14, and the CX4 interface 15 are internal circuits formed on the PCB 113 described above.

  A transmission / reception unit (Tx / Rx) 21 provided on the host device side is a device that realizes XGXS (10 Gigabit ethernet Extended Sublayer) defined in IEEE 802.3ae. That is, the transmission / reception unit (Tx / Rx) 21 is one of applications developed for 10 Gigabit Ethernet (registered trademark) defined by IEEE 802.3ae, and is an XGMII (10 Gigabit Media Independent Interface) device and an XAUI. This is to provide a connection function between devices. XGMII device is also one of the applications specified in IEEE 802.3ae, 156 MHz double data rate (DDR), parallel, small range, interconnect interface, 10 Gigabit Ethernet (registered) ™ media access control (MAC) and physical layer (PHY) device interfaces.

  The re-timer 11 extracts a clock from a signal input from the host device via the balanced transmission connector 103 and is input from the bit width of the data input from the host device and the reference clock generation unit 13. By adjusting the timing of the edge with the reference clock, the data input from the transmission / reception unit (Tx / Rx) 21 provided on the host device side is balanced while synchronizing with the network formed by the cable 154 The data is transmitted to another device connected to the other end of the transmission cable 150. In the present embodiment, a circuit for synchronizing with the network is particularly referred to as a synchronization circuit (Normalization) 11a. The retimer 11 inputs data input from the network to the transmission / reception unit (Tx / Rx) 21 of the host device.

  The retimer 11 and the transmission / reception unit (Tx / Rx) 21 are connected via an XAUI interface 22. As described above, the XAUI interface 22 is one of the applications defined in IEEE 802.3ae and is a high-speed interconnect that provides pin count reduction. For reference, FIG. 10 shows a pin usage example of the XAUI interface 22.

  As shown in FIG. 10, the XAUI interface 22 has a connector shape with 70 pins. Among these, pins 1 to 35 are used as input terminals for control signals for controlling the power supply of the transceiver module 100 and other components (such as the control unit 12). The numbers 36 to 70 are used for inputting / outputting target data. As apparent from the reference to pins used for data input / output, that is, pins 36 to 70, data is input as eight sets of differential signals.

  On the other hand, the network and the retimer 11 are connected via a CX4 interface 15. That is, the balanced transmission connector 103 and the balanced transmission cable 150 are configured to satisfy the standard of 10GBASE-CX4. For reference, FIG. 11 shows a pin usage example of the CX4 interface 15.

  As shown in FIG. 11, the CX4 interface 15 has eight sets of pins (S1 + to S8 +, S1 to S8-) for inputting / outputting target data, and a total of nine pins (G1) between them. To G9). Nine pins are mainly used as ground terminals. Also, pins with pin numbers S1 (+, −) to S8 (+, −) are used as signal terminals, and pin numbers 65 and 64, 62 and 61, 59 and 58, 56 and 55, 51 in FIG. 10, respectively. And 50, 48 and 47, 45 and 44, 42 and 41 pins. That is, the balanced transmission cable 150 transmits target data as a differential signal using eight pairs of cables.

  Returning to FIG. In FIG. 9, the control unit 12 controls the retimer 11 based on a control signal such as a MIDO signal, MDC signal, or other signal input from the host device. The reference clock generation unit (Reference Clock) 13 generates a reference clock that is used when synchronizing with the network, and inputs this to the control unit 12. Therefore, the control unit 12 operates the retimer 11 based on the input reference clock to transmit / receive data thereto.

  The power supply unit (Hot Swap Control) 14 supplies the power supply voltage Vcc inputted from the host device side via the XAUI interface 22 to the transceiver module 100.

  With the configuration as described above, according to the present embodiment, a transceiver module is realized that can realize this at low cost for the needs when high-speed communication is required but short-distance communication is sufficient. be able to.

  Next, a second embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the configuration not specifically mentioned is the same as that of the first embodiment.

  The first embodiment is a configuration for only an electric signal, whereas the present embodiment is a configuration that can cope with both an electric signal and an optical signal. Since the configuration of the transceiver module 200 according to the present embodiment is the same as that of the first embodiment, detailed description thereof will be omitted here, and the circuit configuration that is a characteristic part of the present embodiment will be described in detail.

  FIG. 12 is a block diagram showing a circuit configuration of the transceiver module 200 according to the present embodiment. As shown in FIG. 12, the transceiver module 200 according to the present embodiment has a detection / power supply circuit 26 added to the same configuration as the transceiver module 100 according to the first embodiment shown in FIG.

  The detection / power supply circuit 26 detects the type of the cable (electric cable / optical cable 154) connected to the balanced transmission connector 103, that is, whether it is an electric cable or an optical cable. However, the normal optical cable cannot be directly connected to the balanced transmission connector 103. In this embodiment, therefore, an optical cable balanced transmission connector 250 as shown in FIG. 13 is used.

  This optical cable balanced transmission connector 250 has a balanced transmission plug (female) 153 similar to the balanced transmission cable 150 shown in FIG. 5 at one end of the balanced transmission connector main body 252 and an optical cable at the other end. An optical cable socket 255 for inserting 254 is provided. A photoelectric conversion unit 256 in which an element for photoelectric conversion is incorporated is attached to the optical cable socket 255, whereby signals are converted from electricity to light or from light to electricity and transmitted and received. The optical cable socket 255 and the photoelectric conversion unit 256 are usually mounted on a substrate inside the optical cable balanced transmission connector 250. Therefore, in order to reduce the overall size of the optical cable balanced transmission connector 250, in this embodiment, the optical cable socket 255 and a part of the photoelectric conversion unit 256 are exposed to the outside of the housing 251.

  Next, the circuit configuration of the detection / power supply circuit 26 will be described with reference to FIG. As shown in FIG. 14, the detection / power supply circuit 26 includes a detection circuit 26a and a power supply circuit 26b.

  The detection circuit 26a includes an AND circuit AND1, a differential circuit 261 including two comparators COMP1 and COMOP2, resistors R2 to R5, and a capacitor C1. The capacitor C1 is provided for the purpose of removing high frequency noise.

  The detection circuit 26a is connected to one of the ground terminals of the CX4 interface 15. In the present embodiment, as an example, a case where the terminal G7 (TYPE_SENCE) is connected is illustrated. When the cable cable is connected to the CX4 interface 15, that is, when the balanced transmission cable 150 shown in FIG. 5 is connected to the balanced transmission plug (male) 130, the terminal G 7 is connected to the ground (GND) inside the balanced transmission cable 150. ). Therefore, if the total of the conductor resistance in the balanced transmission plug (male) 130 and the conductor resistance until it is connected to the ground (GND) inside the balanced transmission cable 150 is Rc, the potential at point A in FIG. Is Vcc × (Rc / (R2 + Rc)). Since the total conductor resistance Rc is sufficiently smaller than the resistance R2, the potential at the point A is almost at the GND level.

  The potential at point A is input to the inverting input terminal (−) of the comparator COMP1 and the non-inverting input terminal (+) of the comparator COMP2. On the other hand, the potential of the reference voltage Vcc × ((R4 + R5) / (R3 + R4 + R5)) (this is referred to as the reference voltage 1) is input to the non-inverting input terminal (+) of the comparator COMP1, and the inverting input terminal of the comparator COMP2 Reference voltage Vcc × (R5 / (R3 + R4 + R5)) (this is referred to as reference voltage 2) is input to (−).

  In the configuration as described above, since the potential at the point A is lower than the reference voltage 1, the output of the comparator COMP1 becomes High. Further, since the potential at the point A is lower than the reference voltage 2, the output of the comparator COMP2 becomes Low. The outputs of the comparators COMP1 and COMP2 are input to the AND circuit AND1. Since these are High and Low, respectively, the output of the AND circuit AND1 is Low. As a result, the power switch circuit 262 is turned off and no power is supplied to the terminal G8.

  Next, consider a case where the optical cable balanced transmission connector 250 is connected. In the optical cable balanced transmission connector 250, the terminal G7 is connected to the ground (GND) via the resistor Ro. The resistance Ro is set to a value satisfying R5 / (R3 + R4 + R5) <Ro / (R2 + Ro) <(R4 + R5) / (R3 + R4 + R5). At this time, the potential at the point A is expressed by Vcc × (Ro / (R2 + Ro)). Since this value is lower than the reference voltage 1, the output of the comparator COMP1 becomes High. Further, since the potential at the point A is higher than the reference voltage 2, the output of the comparator COMP2 becomes High. Therefore, the output of the AND circuit AND1 becomes High. As a result, the power switch circuit 262 is turned on, and power is supplied to the terminal G8.

  Next, a state where nothing is fitted to the balanced transmission plug (male) 130, that is, a case where the terminal G7 is opened is considered. When the terminal G7 is opened, the potential at the point A is connected to the power supply voltage Vcc via the resistor R2, and thus becomes almost the same potential as Vcc. At this time, since the potential at the point A is higher than the reference voltage 1, the output of the comparator COMP1 becomes Low. Further, since the potential at point A is higher than the reference voltage 2, the output of the comparator COMP2 becomes High. Therefore, the output of the AND circuit AND1 becomes Low. As a result, the power switch circuit 262 is turned off and no power is supplied to the terminal G8. This is a process for safety.

  Here, the relationship between the input voltage of TYPE_SENCE (see FIG. 14) in the detection / power supply circuit 26, the outputs of the comparators COMP1, COMP2, and the AND circuit AND1, and the on / off state of the power switch circuit 262 is shown in Table 1. To summarize. As shown in Table 1, the power switch circuit 262 is turned on only when the TYPE_SENCE input voltage is higher than the reference voltage 2 (0.8 V as an example in the table) and lower than the reference voltage 2 (2.4 V as an example in the table). It becomes a state.

  With the configuration as described above, according to the present embodiment, it is possible to detect the type of cable connected to the transceiver module 200 and operate in accordance with this.

  Next, Example 3 of the present invention will be described in detail with reference to the drawings. In the following description, the same components as those in the first or second embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the configuration not specifically mentioned is the same as that in the first or second embodiment.

  FIG. 15 is a perspective view showing an external configuration of the transceiver module 300 according to this embodiment. As shown in FIG. 15, the transceiver module 300 has a configuration similar to that of the transceiver module 100 according to the first embodiment, and is provided with a removal lever 301 and a latch 302.

  When the transceiver module 300 is mounted in a slot of the host device or the like, the latch 302 engages with a groove provided in a rail portion of the slot, thereby locking the transceiver module 300 to the host device, which inadvertently locks the host device. It is for preventing it from coming off. The removal lever 301 is for releasing the locked state of the transceiver module 300 by accommodating the latch 302 in the transceiver module 300 main body.

  In this embodiment, as shown in FIG. 16, the latch 302 is terminated inside the transceiver module 300 main body by pulling the removal lever 301 forward, that is, in the direction of pulling out the transceiver module 300 from the host device. ing. In the following description, the state of the removal lever 301 shown in FIG. 15 is a locked state or a normal state, and the state of the removal lever 301 shown in FIG. 16 is an unlocked state.

  FIG. 17 shows an exploded view of the transceiver module 300. As shown in FIG. 17, the transceiver module 300 includes lever members (301 a and 301 b) that constitute a removal lever (301) in addition to the same component configuration as the transceiver module 100 according to the first embodiment. That is, the removal lever 301 includes two lever members 301a and 301b. In addition, the transceiver module 300 includes a spring 313 and a metal member 303 provided with a latch 302.

  An arm 311 is provided on the lever member 301a. The arm 311 is provided with a groove 311a and an engaging portion 311b. A spring 313 is fitted in the groove 311a. The spring 313 is interposed between the engaging portion 311b and the bezel 102 at the time of assembly, and acts to return the removal lever 301 to the normal state. In other words, the locked state is kept except when the removal lever 301 is pulled out.

  Further, a wedge 304 described later is provided at the tip of the arm 311. The wedge 304 slides in conjunction with the slide of the removal lever 301.

  The metal member 303 is bent in a U shape on the side opposite to the end where the latch 302 is provided, and this portion is configured to act as a spring.

  Next, the operation of the wedge 304 and the latch 302 will be described with reference to FIG. FIG. 18A is a cross-sectional view taken along line AA of the transceiver module 300 in the locked state. FIG. 18B is a cross-sectional view taken along line AA of the transceiver module 300 in the unlocked state.

  As shown in FIG. 18A, in the locked state, the wedge 304 does not apply a force to one end (the latch 302 side) of the metal member 303. Therefore, the latch 302 protrudes outside the transceiver module 300 main body. On the other hand, by sliding the removal lever 301 in the −Y direction, the wedge 304 is also slid, so that the end of the metal member 303 on the latch 302 side is pushed in the transceiver module 300. Thereby, the latch 302 is accommodated in the transceiver module 300 main body (unlocked state).

  With the configuration as described above, according to the present embodiment, it is possible to prevent the transceiver module from being inadvertently detached from the host device or the like. In addition, this can be realized with a simple configuration.

  Next, a fourth embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same components as those in any of the first to third embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the configuration not specifically mentioned is the same as any one of the first to third embodiments.

  Heat is dissipated from the chip components on the substrate disposed inside the transceiver module. For this reason, generally, in the transceiver module, a die-casting that can form heat-dissipating blades (fins) in the casing portion is used. However, a die-cast housing is heavier than a sheet metal, has a poor dimensional system, and is more expensive. In addition, the transceiver module using the electrical signal as taken up in each of the embodiments described above has an advantage that the power consumption is lower than the transceiver module using the conventional optical signal. Therefore, in this embodiment, a pressed part is employed in at least a part of the transceiver module casing, for example, at least one of the housings including two or more casings. Thereby, a transceiver module with reduced weight, improved manufacturing accuracy, and productivity can be provided at low cost.

  Further, in this embodiment, a simple assembly mechanism is employed to enable easy assembly of the transceiver module housing. Thereby, further improvement in productivity can be obtained.

  FIG. 19 is an exploded view of the transceiver module 400 according to this embodiment. As shown in FIG. 19, the transceiver module 400 has the same configuration as that of the first embodiment, and the first casing 111 is replaced with a first casing 401. The first housing 401 is a pressed sheet metal. The first housing 401 is in direct or indirect contact with a mounting component mounted on the PCB, in particular, the heat radiating body 411. Further, the first housing 401 is provided with a vent hole 402 for exposing at least a part of the radiator 411 to the outside of the transceiver module 400. Further, the first casing 401 is provided with a convex locking mechanism 403, which engages with the concave locking mechanism 412 provided in the second casing 112, so that the first casing 401 is Two housings 112 are configured to be fixed. The lock mechanism 403 acts as a spring and is configured to be distorted when engaged with the lock mechanism 412.

  With the configuration described above, according to the present embodiment, it is possible to provide a transceiver module that is easy to assemble and that is light in weight, improved in manufacturing accuracy, and productivity at low cost.

  In the above description, the case where the first casing 401 or the second casing 112 constituting the housing of the transceiver module 400 is formed by press working has been described as an example. However, the present invention is not limited to this, for example, The first housing 401 or the second housing 112 may be formed by molding instead of pressing. However, in this case, it is desirable that the casing made of the mold is subjected to a conductive plating process in order to improve electrical characteristics.

  Next, a fifth embodiment of the present invention will be described in detail with reference to the drawings. In the following description, components similar to those in the first to fourth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the configuration not specifically mentioned is the same as that of any one of the first to fourth embodiments.

  For example, the optical cable balanced transmission connector 250 described in Example 2 has a thick main body because the photoelectric conversion unit 256 and the optical cable socket 255 are mounted on the substrate provided inside the housing 251. Therefore, in this embodiment, the photoelectric conversion unit 256 and the optical cable socket 255 are provided at the end of the substrate, thereby suppressing the thickness of the main body.

  FIG. 20 is a cross-sectional view showing a configuration of a balanced transmission connector 500 for an optical cable according to this embodiment. FIG. 20 is a cross-sectional view when the principal surface of the optical cable balanced transmission connector 500 is a horizontal plane and cut along a plane perpendicular to the main surface and balanced with the length direction of the optical cable balanced transmission connector 500.

  As shown in FIG. 20, the balanced transmission connector 500 for an optical cable includes a substrate 511, a photoelectric conversion unit 256, and an optical cable socket 255 housed in a housing constituted by a first housing 501 and a second housing 502. ing. The photoelectric conversion unit 256 and the optical cable socket 255 are assembled so that the light receiving / emitting surface of the photoelectric conversion unit 256 is arranged at the bottom of the optical cable socket 255, as in the above-described embodiment.

  An internal connection connector 512 for inserting the substrate 511 is provided on the back surface of the photoelectric conversion unit 256, that is, the surface opposite to the surface on which the optical cable socket 255 is provided. That is, in this embodiment, one end of the substrate 511 has a so-called card edge type connector shape, which is inserted into an internal connection connector 512 provided on the back surface of the photoelectric conversion unit 256. In the substrate 511, the characteristic impedance of the signal line is configured to be 100Ω (ohms) as a differential signal.

  The end of the substrate 511 opposite to the side where the photoelectric conversion unit 256 is attached also has a so-called card edge type connector shape, which is inserted into a plug member (convex portion) 513 formed integrally with the internal connection connector. Make a configuration. The plug member (convex portion) 513 is also referred to as an external connection connector. This configuration will be described in more detail.

  As shown in FIG. 11, the signal contacts sandwiching the insulator are arranged vertically on the external connector side of the plug member (convex portion) 513, and the ground is sandwiched between the insulators on both sides in the horizontal direction. It has a shape in which contacts are arranged. On the other hand, the internal connection connector side is a right angle SMT (surface mount technology) type shape and has a sandwiched SMT shape.

  By configuring as described above, the optical cable socket 255, the photoelectric conversion unit 256, the substrate 511, and the plug member (convex portion) 513 can be arranged side by side, and the thickness of the optical cable balanced transmission connector 500 is suppressed. It becomes possible.

  FIG. 21 shows the configuration of another optical fiber balanced transmission connector 550. As shown in FIG. 21, the optical cable balanced transmission connector 550 has a configuration similar to that of the optical cable balanced transmission connector 500 shown in FIG. An internal connection connector 512 is provided on the lower side. In such a configuration, the substrate 511 and the plug member (male) 553 are electrically connected by a metal member bent into an L shape.

  However, the substrate 511 and the plug member (male) 553 can be electrically connected by, for example, a flexible substrate, but in this case, the signal transmission path becomes longer due to the limitation of the bending radius of the flexible substrate, and the loss. There is a possibility of increasing. Further, a space corresponding to the bending radius of the flexible substrate is required, and there is a possibility that the apparatus will be enlarged. Furthermore, there is a case where there is an influence on the signal characteristics due to refraction by bending the flexible substrate. Therefore, as described above, the substrate 511 and the plug member (male) 553 are preferably electrically connected by an L-shaped metal member.

  Moreover, it is preferable that the 1st and 2nd housing | casing 501 and 502 which accommodates the photoelectric conversion part 256 and the board | substrate 511 are metal. As a result, external noise can be eliminated and electrical characteristics can be improved.

  Next, Embodiment 6 of the present invention will be described in detail with reference to the drawings. In the following description, the same components as those in the first to fifth embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Further, the configuration not specifically mentioned is the same as that of any of the first to fifth embodiments.

  In the present embodiment, a configuration for fixing the transceiver module described in the above-described embodiment and a balanced transmission connector for optical cables (including a balanced transmission connector) will be described.

  FIG. 22 shows a configuration according to this embodiment. In addition, FIG.22 (b) is an enlarged view of the area | region A in Fig.22 (a). As shown in FIGS. 22 (a) and 22 (b), on both sides of the balanced transmission connector for optical cables on the side where the balanced transmission plug (female) 153 is provided, hook-like engagements provided on the transceiver module are provided. A concave engagement portion 601 for assembling with the joint portion is provided. Thereby, both can be fixed reliably and inadvertent disconnection can be prevented.

  Further, the above-described configuration may be a screw-type fixing portion 602 as shown in FIG. 23, for example.

  The above-described Examples 1 to 6 are merely examples for carrying out the present invention, and the present invention is not limited to these, and various modifications of these examples are within the scope of the present invention. Further, it is obvious from the above description that various other embodiments are possible within the scope of the present invention.

It is a perspective view which shows the structure of the optical transceiver module 900 by a prior art. It is a perspective view which shows the external schematic structure of the transceiver module 100 by Example 1 of this invention. (A) is a top view (outside view when viewed in the -Z direction) of the transceiver module 100 according to the first embodiment of the present invention, and (b) is a side view (outside view when viewed in the X direction). (C) is a bottom view thereof (appearance view when viewed in the Z direction). (A) is a front view (outside view when viewed in the Y direction) of the transceiver module 100 according to the first embodiment of the present invention, and (b) is a rear view (outside view when viewed in the -Y direction). (C) is an AA cross-sectional view thereof. It is a perspective view which shows the structure of the cable 150 for balanced transmission docked with the connector 103 for balanced transmission by Example 1 of this invention. 1 is an exploded view of a transceiver module 100 according to Embodiment 1 of the present invention. FIG. It is a figure which shows the structure of the connector 103 for balanced transmission by Example 1 of this invention, (a) is the perspective view, (b) is the front view (outside view when it sees to -Z direction). (C) is a side view thereof (appearance view when viewed in the X direction), and (d) is a rear view thereof (appearance view when viewed in the Z direction). It is a figure which shows the other structure of the connector 103 for balanced transmission by Example 1 of this invention, (a) is the perspective view, (b) is the front view (appearance figure when it sees to -Z direction) (C) is a side view thereof (appearance view when viewed in the X direction), and (d) is a rear view thereof (appearance view when viewed in the Z direction). It is a figure which shows the circuit structure of the transceiver module 100 by Example 1 of this invention. It is a figure which shows the pin usage example of the XAUI interface 22 by Example 1 of this invention. It is a figure which shows the pin usage example of the CX4 interface 22 by Example 1 of this invention. It is a block diagram which shows the circuit structure of the transceiver module 200 by Example 2 of this invention. It is a perspective view which shows the structure of the connector 250 for optical cable balanced transmission by Example 2 of this invention. It is a circuit diagram which shows the circuit structure of the detection / power supply circuit 26 by Example 2 of this invention. It is a perspective view which shows the external appearance structure of the transceiver module 300 by Example 3 of this invention (normal state). It is a perspective view which shows the external appearance structure of the transceiver module 300 by Example 3 of this invention (unlocked state). FIG. 6 is an exploded view of a transceiver module 300 according to a third embodiment of the present invention. It is a figure for demonstrating the effect | action of the wedge 304 and the latch 302 in Example 3 of this invention. FIG. 6 is an exploded view of a transceiver module 400 according to Embodiment 4 of the present invention. It is sectional drawing which shows the structure of the connector for balanced transmission 500 for optical cables by Example 5 of this invention. It is sectional drawing which shows the structure of the connector for balanced transmission 550 for other optical cables by Example 5 of this invention. It is a perspective view which shows the structure of the connector for balanced transmission by Example 6 of this invention. It is a perspective view which shows the structure of the other connector for balanced transmission by Example 6 of this invention.

Explanation of symbols

11 Retimer 12 Control unit 13 Reference clock generation unit 14 Power supply unit 15 CX4 interface 21 Transmission / reception unit (Tx / Rx)
22 XAUI (10 Gigabit Attachment Unit Interface) Interface 26 Detection / Power Supply Circuit 100 Transceiver Module 101 Housing 102 Bezel 103 Balanced Transmission Connector 104 PCB Terminal 106 Ground Terminal 150 Balanced Transmission Cable 151 Housing 152 Balanced Transmission Connector Body 153 Balanced Transmission Plug (female)
154 Electric cable 155 Engagement groove

Claims (5)

A transceiver module connected to an information processing device for transmitting and receiving data between the information processing device and another device,
A balanced transmission cable having a plurality of signal terminals, a plurality of ground terminals, and an electric wire cable connected to these terminals and connected to the other device, a plurality of signal terminals, a plurality of ground terminals, and these terminals A photoelectric conversion unit that performs photoelectric conversion between an optical signal and an electrical signal communicated via each other, an optical cable socket to which the photoelectric conversion unit is attached, and an optical cable that is inserted into the optical cable socket and the other device A balanced transmission connector capable of selectively connecting a balanced transmission connector for an optical cable connected to the optical cable;
A detection unit for detecting whether the cable connected to the balanced transmission connector is the electric cable or the optical cable;
When the cable detected by the detection unit is the optical cable, power is supplied to the photoelectric conversion unit , and when the cable detected by the detection unit is the wire cable, to the other device . And a power supply unit that does not supply power. The detection unit includes a differential circuit including two comparators, a plurality of resistors for inputting different reference voltages to the two comparators, and the power according to outputs from the two comparators. An AND circuit that outputs a high or low level to the supply unit;
The potential applied to any one of a plurality of ground terminals included in the balanced transmission cable or one of a plurality of ground terminals included in the balanced transmission connector for an optical cable is input to the two comparators. 2. The transceiver module according to claim 1, wherein the transceiver module detects whether the cable connected to the balanced transmission connector is the electric wire cable or the optical cable by comparing different reference voltages. . The transceiver module according to claim 1, wherein the power supply unit supplies power to the photoelectric conversion unit via any one of a plurality of ground terminals of the optical fiber balanced transmission connector.   4. The device according to claim 1, wherein a part of the photoelectric conversion unit and the optical cable socket is exposed to the outside of the optical cable balanced transmission connector. 5. Transceiver module. A transceiver module connected to an information processing device for transmitting and receiving data between the information processing device and another device,
A balanced transmission cable having a plurality of signal terminals, a plurality of ground terminals, and an electric wire cable connected to these terminals and connected to the other device, a plurality of signal terminals, a plurality of ground terminals, and these terminals A photoelectric conversion unit that performs photoelectric conversion between an optical signal and an electrical signal communicated via each other, an optical cable socket to which the photoelectric conversion unit is attached, and an optical cable that is inserted into the optical cable socket and the other device A balanced transmission connector that can be selectively connected to a balanced transmission connector for optical cables connected to
A detection unit that detects whether the cable connected to the balanced transmission connector is the electric wire cable or the optical cable, and when the cable detected by the detection unit is the optical cable, the photoelectric conversion part power supplies to, wherein when a cable is detected by the detection unit is the wire cable, a transceiver module having a power supply unit does not supply power to the other devices,
A transceiver system comprising: a balanced transmission cable or an optical cable balanced transmission connector connectable to the balanced transmission connector.

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