MIC3000 Datasheet, PDF (47/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
Micrel
Alarm Flags
D[7]
A7
read-only
D[6]
A6
read-only
D[5]
A5
read-only
Alarm Register 0 (ALARM0)
D[4]
A4
read-only
D[3]
A3
read-only
D[2]
A2
read-only
D[1]
A1
read-only
D[0]
A0
read-only
Default Value
0000 0000_b = 00_h (no events pending)
Serial Address
A2_h = 1010001_b
Byte Address
112 = 70_h
The power-up default value is 00_h. Following the first A/D conversion, however, any of the bits may be set depending
upon the results.
Bit(s)
D[7]
A7
D[6]
A6
D[5]
A5
D[4]
A4
D[3]
A3
D[2]
A2
D[1]
A1
D[0]
A0
Function
High temperature alarm, TEMPh > TMAXh.
Low temperature alarm, TEMPh < TMINh.
High voltage alarm, VINh > VMAXh.
Low voltage alarm, VINh < VMINh.
High laser diode bias alarm, IBIASh > IMAXh.
Low laser diode bias alarm, IBIASh < IMINh.
High transmit optical power alarm,
TXOPh > TXMAXh.
Low transmit optical power alarm,
TXOPh < TXMINh.
Operation
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
Alarm Register 1 (ALARM1)
D[7]
A15
read-only
D[6]
A14
read-only
D[5]
reserved
D[4]
reserved
D[3]
reserved
D[2]
reserved
D[1]
reserved
D[0]
reserved
Default Value
0000 0000_b = 00_h (no events pending)
Serial Address
A2_h = 1010001_b
Byte Address
113 = 71_h
The power-up default value is 00_h. Following the first A/D conversion, however, any of the bits may be set depending
on the results.
Bit(s)
D[7]
A15
D[6]
A14
D[5:0]
Function
High received power (overload) alarm,
RXOPh > RXMAXh.
Low received power (LOS) alarm,
RXOPh < RXMINh.
Reserved
Operation
1 = condition exists, 0 = normal/OK.
1 = condition exists, 0 = normal/OK.
Reserved - always write as zero.
October 2004
47
M9999-101204