WM8351CGEB/RV WOLFSON [Wolfson Microelectronics plc], WM8351CGEB/RV Datasheet - Page 183

• Manufacturer Part Number: WM8351CGEB/RV
• Manufacturer: WOLFSON [Wolfson Microelectronics plc]

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Table 124 List of GPIO Alternate Functions
/MEMRST
P_CLK
POR_B
PWR_ON
/RST
RTC
SDOUT
/VCC_FAULT
VRTC
32kHz
FUNCTION NAME
ALTERNATE
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
OUTPUT
INPUT /
Output used to control other subsystems such as external
memory. Signal goes low to reset external memory. The
status of this signal in the Hibernate state is configurable,
allowing external memory contents to be retained in
Hibernate. See Section 14.
1MHz output clock in phase with the internal DC-DC
converters. This signal can be used to sync external circuits
(e.g. DC-DCs).
Output which toggles low to high during power-on reset
Output used to indicate that device is powered on (eg. to
enable external DC-DC converters). This output is disabled
in the OFF state.
Output used to indicate system resets. Signal goes low
during reset, same as the /RST pin. The pulse duration is
programmable. See Section 14.
Real Time Clock output - frequency is controlled by
RTC_DSW[3:0]. See Section 22.
4-wire Control Interface data output pin (SDOUT). Note that
this function is selected automatically on GPIO6 when 4-
wire mode is selected, ie. regardless of the GP6_FN control
field. See Section 11.
Indicates a fault condition on selectable DC Converters,
LDO Regulators and the Limit Switch. The mask bits in
Register 215 determine which supplies contribute to this
status flag. See Section 14.6.5, Section 14.7.3 and
Section 15.2.3.
Output from on-chip backup power source voltage regulator
VRTC.
32kHz clock output from the Real Time Clock oscillator.
DESCRIPTION
PD, April 2012, Rev 4.5
WM8351
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