V23849-R3x-C55

Application Notes

Preliminary Product Information

26

2004-06-28

Digital Diagnostic Monitoring Interface – Intelligent

Alarm and Warning Thresholds (2-Wire Address A2h)

Address

# Bytes

Name

Description

Value

00 - 01

2

Temp High Alarm

MSB at low address

95°C

1)

1)

A delta exists between actual transceiver temperature and value shown as measurement is taken internal to

an IC located on the underside of the iSFP™ PCB.

02 - 03

2

Temp Low Alarm

MSB at low address

–20°C

1)

04 - 05

2

Temp High Warning

MSB at low address

90°C

1)

06 - 07

2

Temp Low Warning

MSB at low address

–15°C

1)

08 - 09

2

Voltage High Alarm

MSB at low address

3.7 V

2)

2)

Transceiver voltage measured after input filter with typical 0.1 V voltage drop.

10 - 11

2

Voltage Low Alarm

MSB at low address

2.85 V

2)

12 - 13

2

Voltage High Warning

MSB at low address

3.63 V

2)

14 - 15

2

Voltage Low Warning

MSB at low address

2.97 V

2)

16 - 17

2

Bias High Alarm

MSB at low address

28 mA

18 - 19

2

Bias Low Alarm

MSB at low address

3.1 mA

20 - 21

2

Bias High Warning

MSB at low address

14.8 mA

22 - 23

2

Bias Low Warning

MSB at low address

4.6 mA

24 - 25

2

Tx Power High Alarm

MSB at low address

–3.5 dBm

26 - 27

2

Tx Power Low Alarm

MSB at low address

–8.5 dBm

28 - 29

2

Tx Power High Warning

MSB at low address

–4 dBm

30 - 31

2

Tx Power Low Warning

MSB at low address

–7.5 dBm

32 - 33

2

Rx Power High Alarm

MSB at low address

–4.5 dBm

34 - 35

2

Rx Power Low Alarm

MSB at low address

–16 dBm

36 - 37

2

Rx Power High Warning

MSB at low address

–5 dBm

38 - 39

2

Rx Power Low Warning

MSB at low address

–14 dBm

40 - 55

16

Reserved

Reserved for future

monitored quantities