16
Table 14. EEPROM Serial ID Memory Contents – Soft Commands (Address A2h, Byte 110)
Status/
Bit # Control Name Description Notes
7 TX_ DISABLE State Digital state of SFP TX_ DISABLE Input Pin (1 = TX_DISABLE asserted) Note 1
6 Soft TX_ DISABLE Read/write bit for changing digital state of TX_DISABLE function Note 1, 2
5 Reserved
4 Rate Select State Digital state of SFP Rate Select Input Pin (1 = RATE_SELECT asserted) Note 1, 3
3 Soft Rate_Select Read/write bit for changing digital state of RATE_SELECT function Note 1, 3
2 TX_FAULT State Digital state of the SFP TX_FAULT Output Pin (1 = TX_FAULT asserted) Note 1
1 RX_LOS State Digital state of the SFP RX_LOS Output Pin (1 = RX_LOS asserted) Note 1
0 Data Ready (Bar) Indicates transceiver is powered and real time sense data is ready. (0 = Ready) Note 3
Notes:
1. The response time for soft commands of the AFBR-57R6APZ is 100 msec as specied by the MSA SFF-8472.
2. Bit 6 is logic OR’d with the SFP TX_DISABLE input pin 3 ... either asserted will disable the SFP transmitter.
3. AFBR-57R6APZ optimizes for 4.25 G & 2.125 Gb/s performance when asserted and 2.125 G & 1.0625 Gb/s performance when deasserted. Bit 3 is
logic OR’d with the SFP RATE_SELECT input pin 7 . . . either asserted will set the SFP transceiver to high bit rate parametric performance.
Table 15. EEPROM Serial ID Memory Contents – 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 laser bias current exceeds high alarm threshold
2 Tx Bias Low Alarm Set when transceiver laser bias current 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 average optical power exceeds high alarm threshold
6 Rx Power Low Alarm Set when received average optical power exceeds low alarm threshold
0-5 Reserved
116 7 Temp High Warning Set when transceiver internal temperature exceeds high warning threshold
6 Temp Low Warning Set when transceiver internal 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 laser bias current exceeds high warning threshold
2 Tx Bias Low Warning Set when transceiver laser bias current 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 average optical power exceeds high warning threshold
6 Rx Power Low Warning Set when received average optical power exceeds low warning threshold
0-5 Reserved
