WM8352
Production Data
The status of the DC-DC Converters can be indicated and monitored externally via a GPIO pin
configured as /VCC_FAULT (see Section 20). When a GPIO pin is configured as /VCC_FAULT
output, a logic low level on this pin indicates that there is a fault condition on one of the LDO
Regulators, DC-DC Converters, or the Current Limit switch.
The /VCC_FAULT output is configurable by the control fields in Register R215. The fields described
in Table 81 determine which of the DC-DCs contribute to the /VCC_FAULT indication. An
undervoltage or overvoltage condition on any unmasked DC-DC Converter will cause the
/VCC_FAULT output to be set to logic low.
ADDRESS
R215 (D7h)
VCC_FAULT
BIT
LABEL
DEFAULT
DESCRIPTION
5
DC6_FAULT
0
DCDC6 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
4
3
2
1
0
DC5_FAULT
DC4_FAULT
DC3_FAULT
DC2_FAULT
DC1_FAULT
0
0
0
DCDC5 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
DCDC4 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
DCDC3 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
DCDC2 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
DCDC1 fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
Table 81 DC Converter /VCCFAULT mask bits
PD, February 2011, Rev 4.4
134
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
