MIC3000 Datasheet, PDF (48/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
Micrel
Warning Flags
D[7]
W7
read-only
D[6]
W6
read-only
Warning Register 0 (WARN0)
D[5]
W5
read-only
D[4]
W4
read-only
D[3]
W3
read-only
D[2]
W2
read-only
D[1]
W1
read-only
D[0]
W0
read-only
Default Value
0000 0000_b = 00_h (no events pending)
Serial Address
A2_h = 1010001_b
Byte Address
116 = 74_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]
W7
D[6]
W6
D[5]
W5
D[4]
W4
D[3]
W3
D[2]
W2
D[1]
W1
D[0]
W0
Function
Operation
High temperature warning, TEMPh > THIGHh. 1 = condition exists, 0 = normal/OK.
Low temperature warning, TEMPh < TLOWh.
1 = condition exists, 0 = normal/OK.
High voltage warning, VINh > VHIGHh.
1 = condition exists, 0 = normal/OK.
Low voltage warning, VINh < VLOWh.
1 = condition exists, 0 = normal/OK.
High laser diode bias warning, IBIASh > IHIGHh. 1 = condition exists, 0 = normal/OK.
Low laser diode bias warning, IBIASh < ILOWh. 1 = condition exists, 0 = normal/OK.
High transmit optical power warning,
TXOPh > TXHIGHh.
1 = condition exists, 0 = normal/OK.
Low transmit optical power warning,
TXOPh < TXLOWh.
1 = condition exists, 0 = normal/OK.
Warning Register 1 (WARN1)
D[7]
W15
read-only
D[6]
W14
read-only
D[5]
read-only
D[4]
read-only
D[3]
read-only
D[2]
read-only
D[1]
read-only
D[0]
read-only
Default Value
0000 0000_b = 00_h (no events pending)
Serial Address
A2_h = 1010001_b
Byte Address
117 = 75_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]
W15
D[6]
D[5:0]
W14
Function
Operation
Received power high warning,
RXOPh > RXHIGHh.
1 = condition exists, 0 = normal/OK.
Received power low warning, RXOPh < RXMINh. 1 = condition exists, 0 = normal/OK.
Reserved
Reserved - always write as zero.
M9999-101204
48
October 2004