mic3003 Micrel Semiconductor, mic3003 Datasheet - Page 57

• Manufacturer Part Number: mic3003
• Description: Fom Management Ic With Internal Calibration
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
May 2009
Default value
Serial address
Byte address
A write to OEMCFG1 will result in any A/D conversion in progress being aborted and the result discarded. The A/D will begin a
new conversion sequence once the write operation is complete.
All bits in OEMCFG1 are non-volatile and will be maintained through power and reset cycles. A valid OEM password is
required for access to this register.
D[7]
D[6]
D[5]
D[4:2]
D[1]
D[0]
read/write
D[7]
INV
Bit(s)
INV
GAIN
BIASREF
RFB[2:0]
SRCE
SPOL
read/write
GAIN
D[6]
Inverts the APC op-amp inputs.
When low, the BIAS DAC output is
connected to the “+”input and FB is
connected to the “–” input of the op
amp. Set low to use the ADC
feedback loop.
Sets the feedback voltage range by
changing the APCDAC output
swing; 0-V
0-V
Selects whether FB and VMPD are
referenced to ground or V
selects feedback resistor termination
voltage (V
Selects internal feedback resistance.
Resistors will be terminated to V
or GNDA according to BIASREF.
V
Polarity of the shutdown output,
SHDN, when active.
Function
BIAS
REF
source or sink drive.
/4 for electrical feedback.
read/write
BIASREF
DDA
REF
D[5]
or GNDA).
for optical feedback,
OEM Configuration Register 1 (OEMCFG1)
0000 0000 b = 00 h
A6 h
1 = 01 h
read/write
DD
RFB[2]
D[4]
and
DDA
Operation
0 = emitter follower (no inversion);
1 = common emitter (inverted); read/write; non-volatile.
1 = V
0 = V
1 = V
000 = ∞
001 = 800 Ω
010 = 1.6 kΩ
011 = 3.2 kΩ
100 = 6.4 kΩ
101 = 12.8 kΩ
110 = 25.6 kΩ
111 = 51.2 kΩ
1 = source (NPN)
0 = sink (PNP)\
1 = SHDN is active-high
0 = SHDN is active-low
read/write
57
RFB[1]
REF
REF
DD
D[3]
; 0 = GNDA
/4 full scale;
full scale
read/write
RFB[0]
D[2]
[e-mail]
read/write
SRCE
D[1]
or [phone]
read/write
M9999-052709-A
SPOL
D[0]
MIC3003