WM8352
Production Data
The status of the Current Limit Switch 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 LS_FAULT bit
described in Table 95 selects whether the Limit Switch contributes to the /VCC_FAULT indication.
When LS_FAULT = 0, then an overcurrent condition on the Limit Switch will cause the /VCC_FAULT
output to be set to logic low.
ADDRESS
R215 (D7h)
VCC_FAULT
BIT
LABEL
DEFAULT
DESCRIPTION
15
LS_FAULT
0
Limit Switch fault mask for the
/VCC_FAULT
0 = don't mask converter fault
1 = mask converter fault
Table 95 Limit Switch /VCCFAULT mask
PD, February 2011, Rev 4.4
146
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
