MIC3003 Datasheet, PDF (59/75 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3003
APC Setpoint 0, 1, and 2 (APCSET0, APCSET1, APCSET2)
Automatic Power Control Setpoint
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 for all three bytes
0000 0000b = 00h
Serial address
A6h
Byte addresses
APCSET0: 3 = 03h
APCSET1: 4 = 04h
APCSET2: 5 = 05h
When the APC is on, the eight-bit signed integer compensation value corresponding to the current temperature is taken from
the BIASLUT look-up table, added to the selected APCSET (0, 1, or 2) register and loaded into the V_BIAS DAC.
If DAC Calibration mode is selected in OEMCAL0, a write to any one of the three APCSETn registers will cause the V_BIAS DAC
to be updated immediately. DAC Calibration mode disables the output of the BIASLUT lookup table, so the unmodified
APCSETn register value propagates directly to the DAC.
The eight-bit value presented to the V_BIAS DAC is always available for readback in the APCDAC register.
A valid OEM password is required for access to these registers. These registers are non-volatile and will be maintained through
power and reset cycles.
D[7]
read/write
Modulation Setpoint 0, 1, and 2 (MODSET0, MODSET1, and MODSET2)
Nominal V_MOD Setpoint
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 for all three bytes
0000 0000b = 00h
Serial address
A6h
Byte address
MODSET0: 6 = 06h
MODSET1: 30 = 1Eh
MODSET2: 31 = 1Fh
When the APC is on, the eight-bit signed integer compensation value corresponding to the current temperature is taken from
the MODLUT look-up table, added to the selected MODSET (0, 1, or 2) register and loaded into the V_MOD DAC.
If DAC Calibration mode is selected in OEMCAL0, a write to any one of the three MODSETn registers will cause the V_MOD DAC
to be updated immediately. DAC Calibration mode disables the output of the MODLUT lookup table, so the unmodified
MODSETn register value propagates directly to the DAC.
The eight-bit value presented to the V_MOD DAC is always available for readback in the MODDAC register.
A valid OEM password is required for access to these registers. These registers are non-volatile and will be maintained through
power and reset cycles.
November 2009
59
M9999-111209-C
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