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HFBR-5710L Datasheet(PDF) 2 Page - Agilent(Hewlett-Packard) |
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HFBR-5710L Datasheet(HTML) 2 Page - Agilent(Hewlett-Packard) |
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2 / 15 page  2 Figure 1. HFBR-5710L block diagram. Overview The HFBR-5710L offers maxi- mum flexibility to designers, manufacturers, and operators of Gigabit Ethernet networking equipment. A pluggable architec- ture allows the module to be installed into MSA standard SFP ports at any time – even with the host equipment operating and online. This facilitates the rapid configuration of equipment to precisely the user’s needs – reducing inventory costs and network downtime. Compared with traditional transceivers, the size of the Small Form Factor package enables higher port densities. Module Diagrams Figure 1 illustrates the major functional components of the HFBR-5710L. The external configuration of the module is depicted in Figure 7. Figure 8 depicts the panel and host board footprints. Installation The HFBR-5710L can be installed in or removed from any MSA- compliant Pluggable Small Form Figure 2. Pin description of the SFP electrical interface. Factor port regardless of whether the host equipment is operating or not. The module is simply inserted, electrical-interface first, under finger-pressure. Controlled hot-plugging is ensured by 3-stage pin sequencing at the electrical interface. This printed circuit board card-edge connector is depicted in Figure 2. As the HFBR-5710L is inserted, first contact is made by the housing ground shield, dis- charging any potentially component-damaging static electricity. Ground pins engage next and are followed by Tx and Rx power supplies. Finally, signal lines are connected. Pin functions and sequencing are listed in Table 2. VEET 20 TD– 19 TD+ 18 VEET 17 VCCT 16 VCCR 15 VEER 14 RD+ 13 RD– 12 VEER 11 TOP OF BOARD VEET 1 TX FAULT 2 TX DISABLE 3 MOD-DEF(2) 4 MOD-DEF(1) 5 MOD-DEF(0) 6 RATE SELECT 7 LOS 8 VEER 9 VEER 10 BOTTOM OF BOARD (AS VIEWED THROUGH TOP OF BOARD) ENGAGEMENT SEQUENCE 3 2 1 3 2 1 INCOMING OPTICAL SIGNAL OUTGOING OPTICAL SIGNAL PHOTODETECTOR RECEIVER AMPLIFICATION & QUANTIZATION RD+ (RECEIVE DATA) RD– (RECEIVE DATA) LOSS OF SIGNAL VCSEL TRANSMITTER LASER DRIVER & SAFETY CIRCUITRY TX_DISABLE TD+ (TRANSMIT DATA) TD– (TRANSMIT DATA) TX_FAULT ELECTRICAL INTERFACE MOD-DEF2 MOD-DEF1 MOD-DEF0 EEPROM OPTICAL INTERFACE |
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