MIC3000 Datasheet, PDF (42/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
Micrel
RX Optical Power High Warning Threshold MSB (RXHIGHh)
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default Value
0000 0000_b = 00_h (0mW)
Serial Address
A2_h = 1010001_b
Byte Address
36 = 24_h
Each LSB represents 25.6µW. This register is to be used in conjunction with RXHIGHl to yield a sixteen-bit value. The
value in this register is uncalibrated. The value in RXHIGHh is compared against RXOPh. Warning bit Wx is set if
RXOPh > RXHIGHh.
RX Optical Power High Warning Threshold LSB (RXHIGHl)
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default Value
0000 0000_b = 00_h (0mW)
Serial Address
A2_h = 1010001_b
Byte Address
37 = 25_h
Each LSB represents 0.1µW. This register is to be used in conjunction with RXHIGHh to yield a sixteen-bit value. The
values in RXHIGHh:RXHIGHl are in an unsigned binary format. The value in this register is uncalibrated. The value in
RXHIGHh is compared against RXOPh. Warning bit Wx is set if RXOPh > RXHIGHh. Since RXOPl is always zero, it is
recommended that this register always be programmed to zero. This register is provided for compliance with SFF-
8472. It is not used by the MIC3000 when doing threshold comparisons and setting alarm or warning bits.
RX Optical Power Low Warning Threshold MSB (RXLOWh)
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default Value
0000 0000_b = 00_h (0mW)
Serial Address
A2_h = 1010001_b
Byte Address
38 = 26_h
Each LSB represents 25.6µW. This register is to be used in conjunction with RXLOWl to yield a sixteen-bit value. The
value in this register is uncalibrated. The value in RXLOWh is compared against RXOPh. Warning bit Wx is set if
RXOPh < RXLOWh.
RX Optical Power Low Warning Threshold LSB (RXLOWl)
D[7]
read/write
D[6]
read/write
D[5]
read/write
D[4]
read/write
D[3]
read/write
D[2]
read/write
D[1]
read/write
D[0]
read/write
Default Value
0000 0000_b = 00_h (0mW)
Serial Address
A2_h = 1010001_b
Byte Address
39 = 27_h
Each LSB represents 0.1µW. This register is to be used in conjunction with RXLOWh to yield a sixteen-bit value. The
values in RXLOWh:RXLOWl are in an unsigned binary format. The value in this register is uncalibrated. The value in
RXLOWh is compared against RXOPh. Warning bit Wx is set if RXOPh < RXLOWh. Since RXOPl is always zero, it is
recommended that this register always be programmed to zero. This register is provided for compliance with SFF-
8472. It is not used by the MIC3000 when doing threshold comparisons and setting alarm or warning bits.
M9999-101204
42
October 2004