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broadcom - 1 - description the AFBR-57E6APZ-HT small form factor pluggable lc transceiver provides the system designer a product to implement fddi/fast ethernet networks with dmi physical layers. as an enhancement to the conventional sfp interface defined in sff-8074i, the afbr-57e6apz-h t is compatible to sff-8472 (digital diagnostic interface for optical transceivers). using the 2-wire serial interface defined in the sff-8472 msa, the AFBR-57E6APZ-HT provides real time information on temperature, led bias current, led average output power and receiver average input power. the interface also adds the ability to monitor the receiver loss of signal (rx_los). transmitter the transmitter contains a 1310-nm ingaasp led. this led is packaged in the optical subassembly of the transmitter. it is driven by an integrated circuit which converts differential pecl logic signals into an analog led drive current. this current is monitored by the digital diagnostic interface. the transmitter light output power is inferred from this information. the led is switched off in case a static signal is present at the pecl inputs. receiver the receiver uses an ingaas pin photodiode coupled to a transimpedance pre- and postamplif ier ic. it is packaged in the optical subassembly of the receiver. the data output is differential lvpecl. the los output is +3.3 v ttl as per sff-8074i. the pin ph otodiode average current is monitored by the digital diagnostic interface as a measure for input optical power. rx squelch is activated when a low input power is detected. features ? rohs compliant ? lead free ? industry standard small form pluggable (sfp) package ? lc duplex connector optical interface ? operates with 50/125 m and 62.5/125 m multimode fiber ? compatible with 100base-fx version of ieee802.3u ? single +3.3v power supply ? +3.3v ttl los output ? squelched receiver outputs ? manufactured in an iso 9001 certified facility ? operating temperature range: C40c to 95c ? bail de-latch ? hot plug capability applications ? factory automation at fast ethernet speeds ? fast ethernet networking over multimode fiber AFBR-57E6APZ-HT multimode small form factor pluggable transceivers with lc connector and dmi for fddi and fast ethernet data sheet
broadcom - 2 - AFBR-57E6APZ-HT data sheet loss of signal the loss of signal (los) output indicates that the optical input power to the receiver does not meet the minimum detectable level for fddi compliance. module package the transceiver package is compliant with the small form pluggable (sfp) msa with the lc duplex connector option. the hot-pluggable capability of the sfp package allows the module to be installed at any time incl uding when the host system is on-line and operating. this permits the system to be configured or maintained wi thout system downtime. the AFBR-57E6APZ-HT requires a 3.3v dc power supply for optimal performance. module diagrams figure 1 illustrates the major functional components of the AFBR-57E6APZ-HT. the connection diagram of the module is shown in figure 2. figures 5 to 7 depict the external configuration and dimensions of the module. installation the AFBR-57E6APZ-HT can be inst alled in or removed from any multisource agreement (msa) C compliant small form pluggable 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. the module housing makes initia l contact with the host board emi shield mitigating potential damage due to electrostatic discharge (esd). the 3-stage pin contact sequencing involves (1) ground, (2) power, and then (3) signal pins making contact with the host board surface mo unt connector in that order. figure 1 transceiver functional diagram light from fiber light to fiber photo-detector receiver amplification & quantization rd+ (receive data) rdC (receive data) rx loss of signal led transmitter led driver tx_disable td+ (transmit data) tdC (transmit data) tx_fault electrical interface mod-def2 (sda) mod-def1 (scl) mod-def0 controller & memory optical interface
broadcom - 3 - AFBR-57E6APZ-HT data sheet this printed circuit board card edge connector is depicted in figure 2. figure 2 connection diagram of module printed circuit board digital diagnostic interface and serial identification the 2-wire serial interface is based on atmel at24c02c series eeprom protocol. convention al eeprom memory (bytes 0C255 at memory address 0xa0 ) is organized in compliance with sff-8074i. as an enhancement the AFBR-57E6APZ-HT is also compatible to sff-8472. this enhancement offers digital diagnostic information at bytes 0C255 at memory address 0xa2. in addition to monitoring of the led drive current and photodiode current, the interfac e also monitors the transmitter supply voltage and the temperature. the transmitter voltage supply must be provided for the digital diagnostic interface to operate. data i/o the AFBR-57E6APZ-HT fiber-optic transceiver is designed to accept industry standard differential signals. the transceiver provides an ac-coupled, internally terminated data interface. coupling capacitors have been included within the module to reduce the number of componen ts on the customer's board. figure 3 depicts the recommended interface circuitry. regulatory compliance see table 1 for transceiver regulatory compliance performance. the overall equipment design will determine the certification level. the transceiver performance is offered as a figure of merit to assist the designer. electrostatic discharge (esd) there are two conditions where immunity to esd damage is important. table 1 documents the transceivers immunity to both these conditions. the first condition is static discharge to the transceiver when handling it. for example when the transceiver is inserted into the transceiver port. to protect th e transceiver, it is important to use normal esd handling procedures. these precautions include grounded wrist straps, workbenches, and floor maps in esd controlled areas. the esd sensitivity of the AFBR-57E6APZ-HT is compatibl e with typical industry production environments. the second condition is static discharge to the exterior of the host equipment chassis after instal lation. to the extent that the duplex lc optical interface is exposed to the outside of the host equipment chassis, it may be subject to system-level esd events. the esd performance of AFBR-57E6APZ-HT exceeds typical industry standards. immunity equipment hosting the afbr-57e 6apz-ht will be subjected to radio-frequency electromagnetic fields in some environments. these transceivers have good immunity to such fields due to their shielded design. electromagnetic interference (emi) most equipment designs using these high-speed transceivers from avago will be required to meet the requirements of cenelec en55022. the metal housing design and shielded design of the AFBR-57E6APZ-HT transceiver minimize the emi challenge facing the host equipment designer. the transceivers provide superior emi performance. eye safety these transceivers provide class 1 eye safety by design. avago has tested the transceiver de sign for compliance with the requirements listed in table 1 under normal operating conditions and under a single fault condition. flammability the AFBR-57E6APZ-HT transceiver housing is made of metal and high strength, heat resist ant, chemically resistant and ul-94v-0 flame retardant plastic. shipping container ten transceivers are packaged in one shipping container designed to protect it from mechanical and esd damage during shipment or storage. 20 v ee t 19 tdC 18 td+ 17 v ee t 16 v cc t 15 v cc r 14 v ee r 13 rd+ 12 rdC 11 v ee r top of board 1v ee t 2nu 3 txdisable 4 mod-def(2) 5 mod-def(1) 6 mod-def(0) 7nu 8 los 9v ee r 10 v ee r bottom of board (as viewed through top of board)
broadcom - 4 - AFBR-57E6APZ-HT data sheet table 1 regulatory compliance feature test method performance electrostatic discharge (esd) to the electrical pins jedec jesd22-a114 meets class 2 (2000v to 3999v). withstand up to 2000v applie d between electrical pins. electrostatic discharge (esd) to the duplex lc receptacle variation of iec 61000-4-2 typically withstand at least 9 kv without damage when the lc connector receptacle is contacted by a human body model probe. typically withstand 15 kv air discharge on lc-connector receptacle. electromagnetic interference (emi) fcc class b, cenelec en55022 (cispr 22) class b system margins are dependent on customer board and chassis design. immunity iec 61000-4-3 typically shows no measurable effect from a 10 v/m field swept from 80 to 1 ghz applied to the transceiver without a chassis enclosure. component recognition underwriters laboratories and canadian standards association joint component recognition for information technology equipment including electrical business equipment e173874, vol. 1 eye safety en 60950-1:2006+a11+a1+a12+a2 en 60825-1:2007 en 60825-2:2004+a1+a2 compliant per avago testing under single fault conditions. rohs compliance reference to rohs directive 2011/65eu annex ii
broadcom - 5 - AFBR-57E6APZ-HT data sheet figure 3 recommended connection circuitry note refer to serdes suppliers recommendation regarding the interface between the AFBR-57E6APZ-HT and the serdes. the proposed termination is a general recommendation for lvpecl ac-coupled signals. other terminations could also be applic able depending on the serdes interface. figure 4 ms required power supply filter tx dis protocol ic rx_los sda scl 4.7k to 10k module detect serdes so+ so- si+ si- mod_def1 mod_def2 mod_def0 3.3 v 4.7k to 10k 4.7k to 10k 4.7k to 10k rx_gnd 3.3 v 0.1 0.1 50 50 controller amplifier & quantization led driver & safety circuitry 0.1 100 0.1 7.6k AFBR-57E6APZ-HT 10 0.1 vccr rx_los rd- rd+ 1 h 1 h 0.1 vcct 0.1 10 3.3 v td- td+ 50 50 tx_gnd 10 3.3 v 2.7k 2.7k 4.3k 4.3k 100 led pd AFBR-57E6APZ-HT vcc tx vcc rx 0.1uf 0.1uf 0.1uf 1uh 1uh 10uf 10uf 3.3v note: inductors should have less than 1 ohm series resistor per msa * optional capacitance but recommended (required for sfp+) 10uf*
broadcom - 6 - AFBR-57E6APZ-HT data sheet table 2 pin description pin name function/description msa notes 1 veet transmitter ground a a. transmitter and receiver grounds ar e connected in the transceiver pcb. 2nu not used b b. pulled to < 0.8v during transceiver operation. 3 tx disable transmitter disable C module disables on high or open 4 mod-def2 module definition 2 C two wire serial id interface c c. mod-def 0, 1, 2 are the module definition pins. they should be pulled up with a 4.7 k ? to 10 k ? resistor on the host board to a supply less than v cc t + 0.3v or v cc r +0.3v. to use this inte rface, supply 3.3v to v cc t. mod-def 0 is grounded by the module to indicate that the module is present. mod-def 1 is the clock line of the two-wire serial interface. mod-def 2 is the data line of the two-wire serial interface. 5 mod-def1 module definition 1 C two wire serial id interface c 6 mod-def0 module definition 0 C grounded in module c 7nu not used 8 los loss of signal C high indicates loss of signal d d. loss of signal (los) is an open collector/drain output that should be pulled up externally with a 4.7 k ? to 10 k ? resistor on the host board to a supply less than v cc t,r +0.3v. when high, this output indicate s that the received optical power is below the worst case receiver sensitivity (as de fined by the standard in use). in the low state, the output will be pulled to a voltage less than 0.8v. los only valid if v cc t and v cc r are powered. 9 veer receiver ground a 10 veer receiver ground a 11 veer receiver ground a 12 rd- inverse received data out e e. rd-/+: these are the differential receiv er outputs. they are ac-coupled to 100 ? differential lines which shou ld be terminated with 100 ?? differential at the serdes. ac-coupling is present inside the module and is not required on the host board. 13 rd+ received data out e 14 veer receiver ground a 15 vccr receiver power 3.3v 16 vcct transmitter power 3.3v 17 veet transmitter ground a 18 td+ transmitter data in f f. td-/+: these are the differential transmitter inputs . they are ac-coupled differential lines with 100 ?? differential termination inside the module. ac-coupling is present inside the module and is not required on the host board. 19 td- inverse transmitter data in f 20 veet transmitter ground a
broadcom - 7 - AFBR-57E6APZ-HT data sheet package dimensions figure 5 module drawing 13.80.1 [0.5410.004] 2.60 [0.10] 55.20.2 [2.170.01] 13.40.1 [0.5280.004] yyww country of origin 6.250.05 [0.2460.002] tx rx dimensions are in millimeters [inches] 8.50.1 [0.3350.004] front edge of sfp transceiver cage 0.7max. uncompressed [0.028] 13.00.2 [0.5120.008] 6.6 [0.261] 13.50 [0.53] area for process plug 14.8max. uncompressed [0.583] device shown with dust cap and bail wire delatch tcase reference point component label
broadcom - 8 - AFBR-57E6APZ-HT data sheet figure 6 sfp host board mechanical layout 2x 1.7 20x 0.5 0.03 0.9 2 0.005 typ. 0.06 l s as b 10.53 11.93 20 10 11 pin 1 20 10 11 pin 1 0.8 typ. 10.93 9.6 2x 1.55 0.05 3.2 5 legend 1. pads and vias are chassis ground 2. thr ough holes, plating optional 3. hatched area denotes component and trace keepout (except chassis ground) 4. area denotes component keepout (traces allowed) dimensions are in millimeters 4 3 2 1 1 26.8 5 11x 2.0 10 3x 41.3 42.3 b 10x ? 1.05 0.01 16.25 ref . 14.25 11.08 8.58 5.68 2.0 11x 11.93 9.6 4.8 8.48 a 3.68 see det ail 1 9x 0.95 0.05 2.5 7.1 7.2 2.5 10 3x 34.5 16.25 min. pitch y x detail 1 pcb edge ? 0.1 l s as b 0.06 l s as b ? 0.1 l x s a ? 0.1 y x s ? 0.85 0.05 ? 0.1 a s x l
broadcom - 9 - AFBR-57E6APZ-HT data sheet figure 7 sfp assembly drawing [.600.004] dimensions are in millimeters [inches]. 15.250.1 [.640.004] 16.250.1min pitch [.410.004] 10.40.1 [.39] to pcb 10ref [.020.004] below pcb 0.40.1 [.39] 9.8max [.49] 12.4ref [.05] below pcb 1.15ref [1.64.02] 41.730.5 [.14.01] 3.50.3 [.07.04] 1.70.9 [.59] 15max area for process plug tcase reference point pcb msa-specified bezel bezel cage assembly
broadcom - 10 - AFBR-57E6APZ-HT data sheet absolute maximum ratings stresses in excess of the absolute maximum ra tings can cause catastrophic damage to th e device. limits apply to each parameter in isolation, all other parameters having values within the recommend ed operation conditions. it should not be assumed that limiti ng values of more than one parameter can be applied to the products at the same time. exposure to the absolute maximum ratings for extended periods can adversely affect device reliability. recommended operating conditions all the data in this specific ation refers to the operating conditions above and over lifetime unless otherwise stated. table 3 absolute maximum ratings parameter symbol min max unit notes storage temperature t s C40 +100 c supply voltage v cc C0.5 3.63 v data input voltage v i C0.5 vcc v receiver optical input power p in 0dbm table 4 recommended operating conditions parameter symbol min typ max unit notes case operating temperature t c C40 +95 c a , b a. the case temperature is measured at the surface of the topsid e (see figure 5) using a thermoco uple connected to the housing. b. electrical and optical specifications of the product are guaranteed across reco mmended case operating temperature only. supply voltage v cc 3.0 3.3 3.6 v data output load r l 100 differential signalling rate (fast ethernet) b 125 mbd c c. 4b/5b. ethernet auto-negotiation pulses are not supported. table 5 transmitter electrical characteristics parameter symbol min typ max unit notes supply current i cc 45 70 ma a a. typical values are for room temperature at 3.3v. power dissipation p diss 150 260 mw differential input voltage v diff 0.5 1.0 1.8 v b b. peak to peak. input differential impedance rin 100 ? c c. tx data inputs are ac coupled. transmitter disable (tx disable) high v ih 2.0 vcc v transmitter disable (tx disable) low v il 00.8v
broadcom - 11 - AFBR-57E6APZ-HT data sheet table 6 receiver electrical characteristics parameter symbol min typ max unit notes supply current i cc 31 40 ma a a. typical values are for room temperature at 3.3v. power dissipation p diss 105 145 mw data output: receiver differential output voltage (rd+/-) |v oh -v ol |1.0 1.8 v b , c b. differential output voltage is internally ac-coupled . the low and high voltages are measured using 100 ? differential termination. c. rd+ and rd- outputs are sque lched at los assert levels. data output rise time (10%C90%) tr 2.2 ns data output fall time (10%C90%) tf 2.2 ns loss of signal output voltage C low losv ol 0.8 v loss of signal output voltage C high losv oh 2.0 v table 7 transmitter optical characteristics parameter symbol min typ max unit notes output optical power, 62.5/125m na = 0.275 fiber po C20.0 C17.0 C14.0 dbm a , b a. optical values are measured over the specified operating volt age and temperature ranges. the average power can be converted t o a peak value by adding 3db. b. average. output optical power, 50/125m na = 0.20 fiber po C24.0 C21.0 C17.0 dbm a , b extinction ratio er 10 db central wavelength ? c 1270 1308 1380 nm spectral width C fwhm ?? 147 nm optical rise time (10%C90%) t r 0.6 1.0 3.0 ns c c. measured with a 400mhz opti cal to electrical converter. optical fall time (10%C90%) t f 0.6 1.0 3.0 ns c duty cycle distortion contributed by the transmitter dcd 0.6 ns d , e d. characterized with 125mbd, prbs2 7 -1 pattern. e. duty cycle distortion contributed by the transmitter is me asured at 50% threshold of the optical signal. data dependent jitter contributed by the transmitter ddj 0.6 ns d random jitter contributed by the transmitter rj 0.69 ns d , f f. peak to peak. transmitter disable (high) p o(off ) C45 dbm
broadcom - 12 - AFBR-57E6APZ-HT data sheet table 8 receiver optical and electrical characteristics parameter symbol min typ max unit notes optical input power p in C31.0 C12.0 dbm a , b a. this specification is intended to indica te the performance of the receiver section of the transceiver when optical input powe r signal characteristics are present per the following definitions: a. over the specified operating temperature and voltage ranges b. bit error rate (ber) is better than or equal to 1 10 -10 c. transmitter is operating to simulate an y cross-talk present between the transmitter and receiver sections of the transceiver . b. average. operating wavelength ? r 1270 1380 nm table 9 duty cycle distortion contributed by the receiver dcd 0.4 ns c , d c. duty cycle distortion contributed by the receiver is measured at 50% threshold of the electrical signal. d. characterized with 125mbd, prbs2 7 -1 pattern. data dependent jitter contributed by the receiver ddj 1.0 ns d random jitter contributed by the receiver rj 2.14 ns d , e e. peak to peak. loss of signal C de-asserted p d C32.0 dbm b loss of signal - asserted p a C45 dbm b loss of signal C hysteresis p a C p d 0.5 1.6 db
broadcom - 13 - AFBR-57E6APZ-HT data sheet table 9 transceiver diagnostics timing characteristics parameter symbol min max unit notes figure hardware txdis assert time t_off 10 s a a. time from rising edge of txdis to when the optical output falls below 10% of nominal. figure 8 hardware txdis de-assert time t_on 30 s b b. time from falling edge of txdis to when the m odulated optical output rises above 90% of nominal. figure 8 time to initialize t_init 300 ms c c. time from power on or falling edge of txdis to when the modulated opti cal output rises above 90% of nominal. figure 8 hardware los assert time t_loss_on 100 s d d. time from loss of optical signal to los assertion. hardware los de-assert time t_loss_off 350 s e e. time from valid optical signal to los de-assertion. software tx_disable assert time t_off_soft 100 ms f f. time from two-wire interface assertion of tx_disable (a2h, byte 110, bit 6) to when the optical output falls below 10% of nom inal. measured from falling clock edge after stop bit of write transaction. software tx_disable de-assert time t_on_soft 100 ms g g. time from two-wire interface de-assertion of tx_disable (a2h, byte 110, bit 6) to when the modulated optical output rises abo ve 90% of nominal. software rx_los assert time t_loss_on_soft 100 ms h h. time for two-wire interface assertion of rx_los (a 2h, byte 110, bit 1) from loss of optical signal. software rx_los de-assert time t_loss_off_soft 100 ms i i. time for two-wire interface de-asserti on of rx_los (a2h, byte 110, bit 1) from presence of va lid optical signal. analog parameter data ready t_data 1000 ms j j. from power on to data ready bit asserted (a2h, byte 110, bit 0). data ready indica tes analog monitoring circuitry is function al. serial hardware ready t_serial 300 ms k k. time from power on until module is ready for data transmissi on over the serial bus (reads or writes over a0h and a2h). write cycle time t_write 10 ms l l. time from stop bit to completi on of a 1C8 byte write command. serial id clock rate f_serial_clock 400 khz
broadcom - 14 - AFBR-57E6APZ-HT data sheet figure 8 timing diagram table 10 transceiver digital diagnostic monitor (read time sense) characteristics parameter symbol max units notes transceiver internal temperature accuracy t int 3.0 c registers indicate case temperature which is derived from the internally measured temperature. valid from C40 c to +95 c case temperature with tx enabled. transceiver internal supply voltage accuracy v int 0.1 v supply voltage is measured internal to the transceiver and can, with less accuracy, be correlated to voltage at the sfp vcc pin. valid over 3.3v 10%. transmitter led dc bias current accuracy i bias 10 % ibias is better than 10% nominal value transmitter average optical power accuracy p t 3.0 db transmitter power is inferred from the led bias current. received average optical input power accuracy p r 3.0 db coupled from a 62.5/125m fiber. table 11 eeprom serial id memory contents C address a0h byte # decimal hex ascii description byte # decimal hex ascii description 003 sfp transceiver 3817 104 396a 2 07 lc connector 40 41 a 3 00 4146f 4 00 4242b 5 00 4352r 6 20 100base-fx compliance 44 2d - t_init: txdis negated t_init: txdis asserted t_off & t_on: txdis asserted then negated t_loss_on & t_loss_off t_init optical signal loss of signal occurance of loss t_loss_on t_loss_off txdis transmitted signal t_off t_on transmitter signal txdis tx, rx vcc > 2.97v t_init transmitter signal txdis tx, rx vcc > 2.97v
broadcom - 15 - AFBR-57E6APZ-HT data sheet 7 00 45355 8 00 46377 9 00 4745e 10 00 48 36 6 11 02 4b/5b encoding 49 41 a 12 01 100mbits/s 50 50 p 13 00 51 5a z 14 00 52 2d 15 00 53 48 h 16 c8 54 54 t 17 c8 55 20 18 00 56 20 19 00 57 20 20 41 a 58 20 21 56 v 59 20 22 41 a 60 05 a 23 47 g 61 1e a 24 4f o 62 00 25 20 63 b 26 20 64 00 27 20 65 12 tx disable and los implemented. 28 20 66 00 29 20 67 00 30 20 68 - 83 c 31 20 84 - 91 d 32 20 92 68 digital diagnostics implemented. internally calibrated. average rx power. 33 20 93 d0 alarm warnings, softtx_disable and soft rx_los implemented. 34 20 94 06 includes functionality described in rev 11.3 of sff-8472 35 20 95 b 36 00 96 - 127 00 e 37 00 a. led wavelength is represented in 16 unsigned bits . the hex representation of 1310 (nm) is 0x051e. b. address 63 is the checksum for bytes 0C62 and address 95 is the checksum for bytes 64 C94. they are calcul ated (per sff-8472) and stored prior to product shipment. c. addresses 68C83 specify a unique module serial number. d. addresses 84C91 specify the date code. e. addresses 96C127 are vendor specific. table 11 eeprom serial id memory contents C address a0h byte # decimal hex ascii description byte # decimal hex ascii description
broadcom - 16 - AFBR-57E6APZ-HT data sheet table 12 eeprom serial id memory contents - enhanced features (address a2h) byte # decimal notes byte # decimal notes byte # decimal notes 0 temp h alarm msb a a. temperature (temp) is decoded as a 16 bit signed twos complement integer in increments of 1/256c. 26 tx power l alarm msb b b. transmitted average optical power (tx pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 w. 104 real time rx power msb [5] 1 temp h alarm lsb a 27 tx power l alarm lsb b 105 real time rx power lsb [5] 2 temp l alarm msb a 28 tx power h warning msb b 106 reserved 3 temp l alarm lsb a 29 tx power h warning lsb b 107 reserved 4 temp h warning msb a 30 tx power l warning msb b 108 reserved 5 temp h warning lsb a 31 tx power l warning lsb b 109 reserved 6 temp l warning msb a 32 rx power h alarm msb c c. received average optical power (rx pwr) is decoded as a 16 bit unsigned integer in increments of 0.1 w. 110 status/control C see table 13 7 temp l warning lsb a 33 rx power h alarm lsb c 111 reserved 8 vcc h alarm msb d d. supply voltage (vcc) is decoded as a 16 bit unsigned integer in increments of 100 v. 34 rx power l alarm msb c 112 flag bits C see table 14 9 vcc h alarm lsb d 35 rx power l alarm lsb c 113 flag bits C see table 14 10 vcc l alarm msb d 36 rx power h warning msb c 114 reserved 11 vcc l alarm lsb d 37 rx power h warning lsb c 115 reserved 12 vcc h warning msb d 38 rx power l warning msb c 116 flag bits C see table 14 13 vcc h warning lsb d 39 rx power l warning lsb c 117 flag bits C see table 14 14 vcc l warning msb d 40C55 reserved 118C127 reserved 15 vcc l warning lsb d 56C94 external calibration constants e e. bytes 56-94 are not intended for use with afbr-57e6apz -ht, but have been set to default values per sff-8472. 128C247 customer writable 16 tx bias h alarm msb f f. tx bias current (tx bias) is decoded as a 16 bit unsigned integer in increments of 2 a. 95 checksum for bytes 0-94 g g. byte 95 is a checksum calculated (per s ff-8472) and stored prior to product shipment. 248C255 vendor specific 17 tx bias h alarm lsb f 96 real time temperature msb a 18 tx bias l alarm msb f 97 real time temperature lsb a 19 tx bias l alarm lsb f 98 real time vcc msb d 20 tx bias h warning msb f 99 real time vcc lsb d 21 tx bias h warning lsb f 100 real time tx bias msb f 22 tx bias l warning msb f 101 real time tx bias lsb f 23 tx bias l warning lsb f 102 real time tx power msb b 24 tx power h alarm msb b 103 real time tx power lsb b 25 tx power h alarm lsb b
broadcom - 17 - AFBR-57E6APZ-HT data sheet table 13 eeprom serial id memory contents C soft commands (address a2h, byte 110) bit # status/control name description notes 7 tx_disable state digital state of soft tx_disable 6 soft tx_disable read/write bit for changing digital state of tx_disable function. 5 reserved 4 reserved 3 reserved 2 reserved 1 rx_los state digital state of sfp rx_los output pin (1 = rx_los asserted) 0 data ready (bar) indicates transceiver is powered and real time sense data is ready (0 = ready). table 14 eeprom serial id memory contents C alarms and warnings (address a2h, bytes 112, 113, 116, 117) byte bit flag bit name description 112 7 temp high alarm set when transceiver internal temperature exceeds high alarm threshold. 6 temp low alarm set when transceiver internal temperature exceeds low alarm threshold. 5 vcc high alarm set when transceiver internal supply voltage exceeds high alarm threshold. 4 vcc low alarm set when transceiver internal supply voltage exceeds low alarm threshold. 3 tx bias high alarm set when transceiver led bias exceeds high alarm threshold. 2 tx bias low alarm set when transceiver led bias exceeds low alarm threshold. 1 tx power high alarm set when transmitted average optical power exceeds high alarm threshold. 0 tx power low alarm set when transmitted average optical power exceeds low alarm threshold. 113 7 rx power high alarm set when received aver age optical power exceeds high alarm threshold. 6 rx power low alarm set when received averag e optical power exceeds low alarm threshold. 0C5 reserved 116 7 temp high warning set when transceiver case temperature exceeds high warning threshold. 6 temp low warning set when transceiver case temperature exceeds low warning threshold. 5 vcc high warning set when transceiver internal supply voltage exceeds high warning threshold. 4 vcc low warning set when transceiver internal supply voltage exceeds low warning threshold. 3 tx bias high warning set when transceiver led bias exceeds high warning threshold. 2 tx bias low warning set when transceiver led bias exceeds low warning threshold. 1 tx power high warning set when transmitted average optical power exceeds high warning threshold. 0 tx power low warning set when transmitted average optical power exceeds low warning threshold. 117 7 rx power high warning set when received aver age optical power exceeds high warning threshold. 6 rx power low warning set when received averag e optical power exceeds low warning threshold. 0C5 reserved
for product information and a complete list of distributors, please go to our web site: www.broadcom.com . broadcom, the pulse logo, connecting everything, avago technologies, avago, and the a logo are among the trademarks of broadcom in the united states, certain other countries and/or the eu. copyright ? 2016 broadcom. all rights reserved. the term "broadcom" refers to broadcom limited and/or its subsidiaries. for more information, please visit www.broadcom.com . broadcom reserves the right to make changes without further notice to any products or data herein to improve reliability, function, or design. information furnished by broadcom is believed to be accurate and reliable. however, broadcom does not assume any liability arising out of the application or use of this information, nor the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. pub-005763 C november 16, 2016 table 15 settings of alarm and warning thresholds tx power (dbm) rx power (dbm) transceiver temperature (c) supply voltage (v) tx bias current (ma) high alarm C11 C11 95 3.6 120 low alarm C23 C33 C40 3 10 high warning C12 C12 90 3.5 110 low warning C22 C32 C35 3.1 15

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