MIC3000 Datasheet, PDF (46/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
Micrel
Received Optical Power MSB (RXOPh)
D[7]
read-only
D[6]
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 (0mW)⁽⁶⁾
Serial Address
A2_h = 1010001_b
Byte Address
104 = 68_h
Each LSB represents 25.6µW. This register is to be used in conjunction with RXOPl to yield a sixteen-bit value. The
values in RXOPh:RXOPl are in an unsigned binary format. The value in this register is uncalibrated. The host should
process the results using the scale factor and offset provided. See the External Calibration section.
Received Optical Power LSB (RXOPl)
D[7]
read-only
D[6]
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 (0mW)⁽⁶⁾
Serial Address
A2_h = 1010001_b
Byte Address
105 = 69_h
Each LSB represents 0.1µW. This register is to be used in conjunction with RXOPh to yield a sixteen-bit value. The
values in RXOPh:RXOPl are in an unsigned binary format. The value in this register is uncalibrated. The host should
process the results using the coefficients provided. See the External Calibration section. In the MIC3000, this register
will always return 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.
D[7]
TXDIS
read only
D[6]
STXDIS
read/write
Default Value
Serial Address
Byte Address
Control and Status (CNTRL)
D[5]
reserved
D[4]
RSEL
read/write
D[3]
SRSEL
read/write
0000 0000_b = 00_h
A2_h = 1010001_b
110 = 6E_h
D[2]
XFLT
read only
D[1]
LOS
read only
D[0]
POR
read only
Bit(s)
D[7]
TXDIS
D[6]
STXDIS
D[5]
D[5]
D[4]
RSEL
D[3]
SRSEL
D[2]
TXFLT
D[1]
LOS
D[0]
POR
Function
Reflects the state of the TXDISABLE pin
Soft transmit disable
Reserved
Reflects the state of the RSEL pin
Soft rate select
Reflects the state of the TXFAULT pin
Loss of signal. Reflects the state of the LOS pin
MIC3000 power-on status
Notes:
6. RXOPh will contain measured data after one A/D conversion cycle.
Operation
1 = disabled, 0 = enabled, read only.
1 = disabled; 0 = enabled.
Reserved - always write as zero.
1 = high; 0 = low.
1 = high (2Gbps); 0 = low (1Gbps).
1 = high (fault); 0 = low (no fault).
1 = high (loss of signal); 0 = low (no loss of signal).
0 = POR complete, analog data ready;
1 = POR in progress.
M9999-101204
46
October 2004