mic3003gfltr Micrel Semiconductor, mic3003gfltr Datasheet - Page 62

• Manufacturer Part Number: mic3003gfltr
• Description: Fom Management Ic With Internal Calibration
• Manufacturer: Micrel Semiconductor

Micrel, Inc.
July 2010
D[2:1]
D[7]
D[6]
D[5]
D[4]
D[3]
D[0]
Bit
FRCOPS
APCCAL
FLTDIS
WRINH
FSPIN
Function
Reserved
Fault Comparator disable
Fault Comparator “spin-on-channel” mode
select; do not enable ADC and FC spin-
on-channel modes simultaneously.
Inhibit NVRAM write cycles.
Selects APC DAC calibration mode -
DACs may be controlled directly.
Reserved
Forces outputs for board-level or system-
level testing
62
Operation
Always write as zero; reads undefined.
0 = Fault Comparator faults enabled
1 = Fault Comparator faults disabled
When FLTDIS is high, the Fault Comparator does not run,
and the following faults are not detected:
If a fault condition was detected prior to the assertion of
FLTDIS, the fault flag will remain active until cleared, but
cannot be set again until the Fault Comparator is allowed
to run.
0 = Normal Fault Comparator operation
1 = Force the Fault Comparator to spin on one channel
When the Fault Comparator spins on just one channel
(selected via OEMCAL1[1:0]), the two channels not being
examined will not, of course, respond to fault conditions.
0 = Normal NVRAM operation
1 = Inhibit NVRAM writes
When WRINH is high, writes to the MIC3003’s internal
memory do not occur. Registers that are non-volatile are
written with the new value, but will not retain that value
through a power cycle, since the NVRAM backing storage
has not been modified.
0 = Normal mode
1 = DAC calibration mode.
When DAC calibration mode is enabled, the temperature
compensation lookup tables are disabled, so the DACs
are presented with the values written into their
corresponding registers.
Always write as zeros; reads undefined.
0 = Normal operation
1 = Force outputs for testing: The following outputs are
driven to their active states:
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•
•
•
•
•
High IBIAS faults
High transmit power faults
Low receive power faults
TXFAULT (active polarity set in OEMCFG5)
/INT (only driven if the OEMIM bit is clear in
FLTMSK)
RXLOS (active polarity and RXLOS selection are
set in OEMCFG6)
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MIC3003GFL