MIC3001 Datasheet, PDF (57/74 Pages) Micrel Semiconductor – SFP Management IC with Internal Calibration

MIC3001
Micrel
APC Setpoint 0 (APCSET0)
Automatic power control setpoint (unsigned binary) used when APCSEL[1:0] = 00
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
Serial Address
A6_h = 1010011_b
Byte Address
3 = 03_h
When A.P.C. is on, i.e., the APCCAL bit in OEMCAL0 is set, the value in APCSETx is added to the signed value taken
from the A.P.C. look-up table and loaded into the VBIAS DAC. When A.P.C. is off, the value in APCSET is loaded
directly into the VBIAS DAC, bypassing the look-up table entirely. In either case, the VBIAS DAC setting is reported in
the VBIAS register. The APCCFG bits determine the DAC’s response to higher or lower numeric values. A valid OEM
password is required for access to this register. This register is non-volatile and will be maintained through power and
reset cycles.
APC Setpoint 1 (APCSET1)
Automatic power control setpoint (unsigned binary) used when APCSEL[1:0] = 01
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
Serial Address
A6_h = 1010011_b
Byte Address
4 = 04_h
When A.P.C. is on, i.e., the APCCAL bit in OEMCAL0 is set, the value in APCSETx is added to the signed value taken
from the A.P.C. look-up table and loaded into the VBIAS DAC. When A.P.C. is off, the value in APCSET is loaded
directly into the VBIAS DAC, bypassing the look-up table entirely. In either case, the VBIAS DAC setting is reported in
the VBIAS register. The APCCFG bits determine the DAC’s response to higher or lower numeric values. This register
is non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to
this register.
APC Setpoint 2 (APCSET2)
Automatic power control setpoint (unsigned binary) used when APCSEL[1:0] = 10
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
Serial Address
A6_h = 1010011_b
Byte Address
5 = 05_h
When A.P.C. is on, i.e., the APCCAL bit in OEMCAL0 is set, the value in APCSETx is added to the signed value taken
from the A.P.C. look-up table and loaded into the VBIAS DAC. When A.P.C. is off, the value in APCSET is loaded
directly into the VBIAS DAC, bypassing the look-up table entirely. In either case, the VBIAS DAC setting is reported in
the VBIAS register. The APCCFG bits determine the DAC’s response to higher or lower numeric values. This register
is non-volatile and will be maintained through power and reset cycles. A valid OEM password is required for access to
this register.
August 2004
57
M9999-082404