MIC3003 Datasheet, PDF (56/75 Pages) Micrel Semiconductor – FOM Management IC with Internal Calibration

Micrel, Inc.
MIC3003
OEM Configuration Register 0 (OEMCFG0)
D[7]
RST
write only
D[6]
QGPOS
read/write
D[5]
DFLT
read-only
D[4]
OE
reserved
D[3]
MODREF
reserved
D[2]
VAUX[2]
read/write
D[1]
VAUX[1]
read/write
D[0]
VAUX[0]
read/write
Default value
0000 0000b = 00h
Serial address
A6h
Byte address
00 = 00h
A write to OEMCFG0 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 OEMCFG0 are non-volatile except DFLT and RST. A valid OEM password is required for access to this register.
Bit(s)
D[7]
RST
Function
D[6]
QGPOS Determines the state of QGPO in
GPO mode
D[5]
D[4]
D[3]
D[2:0]
DFLT
OE
MODREF
VAUX[2:0]
Diode fault flag.
Output enable for SHDN, VMOD,
and VBIAS.
Selects whether VMOD is
referenced to ground or VDD.
Selects the voltage reported in
VINh:VINl.
Operation
0 = no action; 1 = reset
Issuing a software reset by setting RST high is equivalent to
a full power cycle of the MIC3003.
If OEMCFG3 bit 7 (QGPOM) is low, this bit determines
whether the QGPO output is high (undriven) or low (driven-
open-drain).
If QGPOM is high (Reset mode), this bit has no function
1 = diode fault; 0 = OK.
1 = enabled; 0 = hi-Z
1 = VDD; 0 = GND
000 = VIN
001 = VDDA
010 = VBIAS
011 = VMOD
100 = APCDAC
101 = MODDAC
110 = FLTDAC
November 2009
56
M9999-111209-C
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