wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 197
wm8351
Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8351.pdf
(328 pages)
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Production Data
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R26 (1Ah)
Interrupt Status
2
R34 (22h)
Interrupt Status
2 Mask
Table 139 Watchdog Timer Interrupts
Note that, if GPIO9 is configured as VCC_FAULT output (GP9_FN = 0001, GP9_DIR = 0), then the
Watchdog Timer will be configured to expect a HEARTBEAT reset trigger. In this configuration, the
Watchdog Reset will never occur and the system may lock up if the Watchdog Mode is enabled.
The Watchdog Timer function cannot be supported if GPIO9 is configured as VCC_FAULT output.
Either the GPIO9 must be reconfigured as some other function, or the Watchdog Timer must remain
disabled.
Note that Config Mode 01 selects GPIO9 = VCC_FAULT by default.
ADDRESS
BIT
0
0
SYS_WDOG_TO_EINT
IM_SYS_WDOG_TO_EINT
LABEL
Watchdog timeout has occurred.
(Rising Edge triggered)
Note: This bit is cleared once read.
Mask bit for Watchdog timer interrupt
When set to 1, IM_SYS_WDOG_TO_EINT
masks SYS_WDOG_TO_EINT in R26 and
does not trigger an SYS_INT interrupt when
SYS_WDOG_TO_EINT is set).
DESCRIPTION
PD, June 2009, Rev 4.1
WM8351
197
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