HFBR-57L5AP Datasheet, PDF (6/18 Pages) AVAGO TECHNOLOGIES LIMITED – Digital Diagnostic SFP 850 nm Transceiver for Fibre Channel 1.0625 Gb/s and Ethernet 1.25 Gb/s

Pin Description
Pin Name
Function/Description
Notes
1
V_EET
2
TX_FAULT
Transmitter Ground
Transmitter Fault Indication - High indicates a fault condition
1
3
TX_DISABLE
Transmitter Disable - Module optical output disables on high or open 2
4
MOD-DEF2
Module Definition 2 - Two wire serial ID interface data line (SDA)
3
5
MOD-DEF1
Module Definition 1 - Two wire serial ID interface clock line (SCL)
3
6
MOD-DEF0
Module Definition 0 - Grounded in module (module present indicator) 3
7
No connect
8
RX_LOS
Loss of Signal - High indicates loss of received optical signal
4
9
VEER
Receiver Ground
10
VEER
11
V_EER
Receiver Ground
Receiver Ground
12
RD-
Inverse Received Data Out
5
13
RD+
Received Data Out
5
14
V_EER
Receiver Ground
15
V_CCR
Receiver Power +3.3 V
6
16
V_CCT
Transmitter Power +3.3 V
6
17
VEET
Transmitter Ground
18
TD+
Transmitter Data In
7
19
TD-
Inverse Transmitter Data In
7
20
VEET
Transmitter Ground
Notes:
1. TX_FAULT is an open collector/drain output, which should be pulled up with a 4.7 k – 10 kW resistor on the host board. When high, this output
indicates a laser fault of some kind. Low indicates normal operation. In the low state, the output will be pulled to < 0.8 V.
2. TX_DISABLE is an input that is used to shut down the transmitter optical output. It is pulled up within the transceiver with a 4.7 k – 10 kW resistor.
Low (0 – 0.8 V): Transmitter on
Between (0.8 V and 2.0 V): Undefined
High (2.0 – V_CC max): Transmitter Disabled
Open: Transmitter Disabled
3. The signals Mod-Def 0, 1, 2 designate the two wire serial interface pins. They should be pulled up with a 4.7 k – 10 kW resistor on the host board.
Mod-Def 0 is grounded by the module to indicate the module is present
Mod-Def 1 is serial clock line (SCL) of two wire serial interface
Mod-Def 2 is serial data line (SDA) of two wire serial interface
4. RX_LOS (Rx Loss of Signal) is an open collector/drain output that should be pulled up with a 4.7 k – 10 kW resistor on the host board. When high,
this output indicates the received optical power is below the worst case receiver sensitivity (as defined by the standard in use). Low indicates
normal operation. In the low state, the output will be pulled to < 0.8 V.
5. RD-/+ designate the differential receiver outputs. They are ac coupled 100 W differential lines which should be terminated with 100 W differential at
the host SerDes. Ac coupling is done inside the transceiver and is not required on the host board. The voltage swing on these lines will be between
500 and 2000 mV differential (250 – 1000 mV single ended) when properly terminated.
6. V_CCR and V_CCT are the receiver and transmitter power supplies. They are defined at the SFP connector pin. The maximum supply current is 210 mA
and the associated inrush current will typically be no more than 30 mA above steady state after 500 nanoseconds.
7. TD-/+ designate the differential transmitter inputs. They are ac coupled differential lines with 100 W differential termination inside the module. The
ac coupling is done inside the module and is thus not required on the host board. The inputs will accept differential swings of 500 – 2400 mV (250 –
1200 mV single ended).
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