SFP Laser Controller and
Diagnostic IC
Table 04h (Table 01h in DS1859 Configuration), B0h to B7h: Thresholds For High-Bias Alarm Flags (HBAL)
FACTORY DEFAULT:
MEMORY TYPE:
FFh
Shadowed Memory (SEE)
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
B0h
B1h
B2h
B3h
B4h
B5h
B6h
B7h
7
2 7
7
7
2 7
7
7
2 7
2 6
2 6
6
6
2 6
6
6
2 6
2 5
2 5
5
5
2 5
5
5
2 5
2 4
2 4
4
4
2 4
4
4
2 4
2 3
2 3
3
3
2 3
3
3
2 3
2 2
2 2
2
2
2 2
2
2
2 2
2 1
2 1
1
1
2 1
1
1
2 1
2 0
2 0
2 0
2 0
2 0
2 0
2 0
2 0
bit7
bit0
These represent the high thresholds for comparing bias levels. Each alarm byte contains the value for the threshold corresponding
to the temperature range indicated below. Only the upper 8 bits of the 16 bit measurement are compared here.
B0h
B1h
B2h
B3h
B4h
B5h
B6h
B7h
Alarm byte location when temperature is less than -8°C.
Alarm byte location when temperature in the range of -8°C to +8°C.
Alarm byte location when temperature in the range of +8°C to +24°C.
Alarm byte location when temperature in the range of +24°C to +40°C.
Alarm byte location when temperature in the range of +40°C to +56°C.
Alarm byte location when temperature in the range of +56°C to +72°C.
Alarm byte location when temperature in the range of +72°C to +88°C.
Alarm byte location when temperature is greater than +88°C.
54
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