MIC3003_11 Datasheet, PDF (48/75 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3003
Received Optical Power
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 0000b = 00h (0mW)(6)
Serial address
A2h
Byte address
MS byte (RXOPh): 104 = 68h
LS byte (RXOPl): 105 = 69h
Each LSB of RXOPh represents 25.6 μW, and each LS bit of RXOPl represents 0.1 μW.RXOPh is used in conjunction with
RXOPl to yield an unsigned sixteen-bit value.
In external calibration mode, the host should process the results using the appropriate slope and offset coefficients. RXOPh
contains the twelve-bit ADC result and the lower four bits of RXOPl are zero.
In internal calibration mode, the MIC3003’s ALU applies the coefficients stored in (RXSLP[0-7]h:RXSLP[0-7]l) and
(RXOFF[0-7]h:RXOFFl[0-7]).
The RXOP registers will contain valid data after one ADC conversion cycle.
D[7]
TXDIS
read-only
Default value
Serial address
Byte address
D[6]
STXDIS
read/write
D[5]
RS1S
read-only
Control and Status (CNTRL)
D[4]
RS0S
read-only
D[3]
SRS0
read/write
D[2]
TXFLT
read-only
0000 0000b = 00h
A2h
110 = 6Eh
D[1]
LOS
read-only
D[0]
POR
read-only
Bit(s)
D[7]
TXDIS
D[6]
STXDIS
D[5]
RS1S
D[4]
RS0S
D[3]
SRS0
D[2]
TXFLT
D[1]
LOS
D[0]
POR
Function
Reflects the state of the TXDISABLE pin
Soft transmit disable STXDIS is Ored with TXDIS
to control the laser which will be turned off if one
of these two signals is set to 1
Reflects the state of RS1 (pin 9)
Reflects the state of RS0 (pin 15)
Soft rate select (sets the state of the RS0 pin)
Reflects the state of the TXFAULT pin
Loss Of Signal. Reflects the state of the RXLOS
pin
MIC3003 power-on status
Operation
1 = disabled,
0 = enabled
1 = disabled
0 = enabled
1 = RS1 is high (>4.25 Gbps);
0 = RS1 is low (≤4.25 Gbps)
1 = RS0 is high (>4.25 Gbps)
0 = RS0 is low (≤4.25 Gbps)
1 = Set RS0 high
0 = Set RS0 low
1 = TXFAULT is high (fault)
0 = TXFAULT low (no fault)
1 = RXLOS is high (loss of signal)
0 = RXLOS is low (no loss of signal)
0 = POR complete, all analog data results
have been converted at least once
1 = POR and first ADC sample cycle in
progress
November 2009
48
M9999-111209-C
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