finisar product specification 1000base-t copper gbic transceivers fcl-8520/8521-3 product features ? up to 1.25gb/s bi-directional data links ? rohs compliant and lead free ? extended operating temperature range (0c to +75c) ? hot-pluggable ? fully metallic enclosure for low emi ? low power (1.5w typical) ? access to physical layer ic via 2- wire serial bus applications ? 1.25 gigabit ethernet over cat 5 cable finisar?s fcl-8520/8521-3 1000base-t copper gbic transceivers are based on the gbic specification revision 5.5 1 . they are compatible with the gigabit ethernet and 1000base-t standards as sp ecified in ieee std 802.3z 2 and ieee std 802.3ab 3 . the fcl-8520-3 uses the gbic?s rx_los pin for link indication, and 1000base-x auto-negotiation must be di sabled on the host system. the FCL-8521-3 is compatible with 1000base-x auto-negotiation, but doe s not have a link indication feature (rx_los is internally grounded). see an-2032, ?commonly asked questions regarding auto-negotiation on finisar?s 1000base-t gbics? 4 , for a more complete explanation on the differences between the two models. product selection part number link indicator on rx_los pin compatible with 1000base-x auto-negotiation fcl-8520-3 yes no FCL-8521-3 no yes ? finisar corporation page 1 rev a, february 2006
fcl-8520/8521-3 1000base-t gbic product specification finisar ? finisar corporation page 2 rev a, february 2006 i. gbic to host connector pin out pin name pin # sequence rx_los* 1 2 gnd 2 2 gnd 3 2 mod_def(0) 4 2 mod_def(1) 5 2 mod_def(2) 6 2 tx_disable 7 2 gnd 8 2 gnd 9 2 gnd 10 2 gnd 11 1 -rx_dat 12 1 +rx_dat 13 1 gnd 14 1 v cc 15 2 v cc 16 2 gnd 17 1 +tx_dat 18 1 -tx_dat 19 1 gnd 20 1 note: rx_los is used for link indication on the fcl- 8520-3, and is internally grounded on the FCL-8521-3 table 1. gbic to host connector pin assignment ?sequence? indicates the order in which pins make contact when the device is hot plugged. for additional information, see ?tab le 3: signal definitions? in the gbic specification revision 5.5. 1
fcl-8520/8521-3 1000base-t gbic product specification finisar ii. +5v volt electrical power interface the fcl-8520/8521-3 has an extended input volt age range of 4.5 to 5.5 v, compared to the gbic standard of 4.25 to 5.25 v. th e 6v maximum voltage is not allowed for continuous operation. note: +5 volt electrical power interface parameter symbol min typ max units notes/conditions supply current i s 310 375 ma 1.7w max power over full range of voltage and temperature. see note 1. input voltage v cc 4.5 5 5.5 v referenced to gnd. maximum voltage v max 6 v surge current i surge 450 ma hot plug. see note 1. table 2. +5 volt electrical power interface 1. caution : power consumption and inrush curre nt are higher than the specified values in the gbic specification rev 5.5 1 . iii. low-speed signals rx_los is a ttl signals as described in table 3 and 4. mod_def(1) (scl) and mod_def(2) (sda), are open drain cmos signals (see section vii, ?serial communication protocol?). bo th mod_def(1) and mod_def( 2) must be pulled up to host_vcc. for more detailed informati on, see sections 5.3.1 ? 5.3.8 in the gbic specification rev. 5.5 1 . low-speed signals, electronic characteristics parameter symbol min max units notes/conditions gbic output low v ol 0 0.5 v 4.7k to 10k pull-up to host_vcc, measured at host side of connector gbic output high v oh host_vcc - 0.5 host_vcc + 0.3 v 4.7k to 10k pull-up to host_vcc, measured at host side of connector gbic input low v il 0 0.8 v 4.7k to 10k pull-up to vcc, measured at gbic side of connector gbic input high v ih 2 vcc + 0.3 v 4.7k to 10k pull-up to vcc, measured at gbic side of connector table 3. low-speed signals, electronic characteristics ? finisar corporation page 3 rev a, february 2006
fcl-8520/8521-3 1000base-t gbic product specification finisar high-speed electrical interface, transmission line-gbic parameter symbol min typ max units notes/conditions line frequency f l 125 mhz 5-level encoding, per ieee 802.3ab. tx output impedance z out,tx 100 ohm differential, for all frequencies between 1mhz and 125mhz. rx input impedance z in,rx 100 ohm differential, for all frequencies between 1mhz and 125mhz. table 4. high-speed electrical in terface, transmission line-gbic iv. high-speed electrical interface all high-speed signals ar e ac-coupled internally. v. general specifications high-speed electrical interface, host-gbic parameter symbol min typ max units notes/conditions differential input voltage v indiff 0.50 2.00 v differential peak - peak differential output voltage v outdiff 0.37 2.00 v differential peak - peak rise/fall time t r ,t f 250 psec 20%-80% differential tx input impedance z in 75 ohm rx output impedance z out 75 ohm table 5. high-speed electrical interface, host-gbic notes: general parameter symbol min typ ma x units notes/conditions data rate br 1.25 gb/sec ieee 802.3 compatible. see notes 1 and 2 below. cable length l 100 m category 5 utp. ber <10 -10 table 6. general specifications 1. clock tolerance is 50 ppm 2. the fcl-8520/8521-3 is a full-duplex devi ce in the ?preferred master? mode . 3. automatic crossover detection is enabled. external crossover cable is not required ? finisar corporation page 4 rev a, february 2006
fcl-8520/8521-3 1000base-t gbic product specification finisar vi. environmental specifications the fcl-8520/8521-3 has an ex tended range from 0c to +75c case temperature as specified in table 8. environmental specifications parameter symbol min typ max units notes/conditions operating temperature t op 0 75 c case temperature storage temperature t sto -40 85 c ambient temperature table 7. environmental specifications vii. serial comm unication protocol all finisar gbics are ?module definitio n ?4?? and support the 2-wire serial communication protocol outlined in the gbic specification 1 . these gbics use an atmel at24c01a 128 byte e 2 prom with an address of a0h. for details on interfacing with the e 2 prom, see the atmel data sheet title d ?at24c01a/02/04/08/ 16 2-wire serial cmos e 2 prom.? 5 the 1000base-t physical layer ic can also be accessed via the 2-wire serial bus at address a4h. for details interfacing with th e phy ic, see marvell data sheet titled ?alaska ultra 88e1011/88e1001s integrated gigabit ethernet transceiver? 6 (marvell document number mv-5100281-00). serial bus timing requirements parameter symbol min typ max units notes/conditions i 2 c clock rate 0 100,000 hz table 8. serial bus timing requirements ? finisar corporation page 5 rev a, february 2006
fcl-8520/8521-3 1000base-t gbic product specification finisar viii. mechanical specifications the host-side of the fcl-8520/8521-3 conforms to the mechanical specifications outlined in the gbic specification revision 5.5, section 6 1 . the front portion of the gbic (part extending beyond the face plate of th e host) is larger to accommodate the rj- 45 connector. see figure 1 below for details. figure 1. fcl-8520/852 1-3 mechanical dimensions ? finisar corporation page 6 rev a, february 2006
fcl-8520/8521-3 1000base-t gbic product specification finisar ix. references 1. ?gigabit interface converter (gbic) revisi on 5.5?. sun microsystems computer company et. al., september 27, 2000. http://playground.s un.com/pub/oemod/ 2. ieee std 802.3z. ieee standards department, 2000. 3. ?ieee std 802.3ab-1999 ?physical layer para meters and specifications for 1000 mb/s operation over 4-pair of cate gory 5 balanced copper cabling, type 1000base-t?. ieee standards department, 1999. 4. ?application note an-xxxx: commonly asked questions regarding auto- negotiation on finisar?s 1000base-t gbics? , finisar corporation, february 2003 5. ?at24c01a/02/04/08/16 2-wire serial cmos e 2 prom?. atmel corporation. www.atmel.com 6. ?alaska ultra 88e1011/88e1001s integrated 10/100/1000 gigabit ethernet transceiver?. marvell corporation. www.marvell.com x. for more information finisar corporation 1389 moffett park drive sunnyvale, ca 94089-1133 tel. 1-408-548-1000 fax 1-408-541-6138 sales@finisar.com www.finisar.com ? finisar corporation page 7 rev a, february 2006
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