Production Data
WM8352
24.3.9 SYSTEM INTERRUPTS
The first-level SYS_INT interrupt comprises four second-level interrupts for various system events.
Each of these has a status bit in Register R26 and a mask bit in Register R34, as defined in Table
151.
ADDRESS
BIT
LABEL
DESCRIPTION
R26 (1Ah)
3
SYS_HYST_COMP_FAIL_EI
NT
Hysteresis comparator indication that
LINE or BATT is less that shutdown
threshold.
Interrupt Status
2
(Rising Edge triggered)
Note: This bit is cleared once read.
Chip over 115°C temp limit.
(Rising Edge triggered)
2
1
SYS_CHIP_GT115_EINT
SYS_CHIP_GT140_EINT
SYS_WDOG_TO_EINT
Note: This bit is cleared once read.
Chip over 140°C temp limit.
(Rising Edge triggered)
Note: This bit is cleared once read.
Watchdog timeout has occurred.
(Rising Edge triggered)
0
Note: This bit is cleared once read.
Interrupt mask.
R34 (22h)
3:0
“IM_” + name of respective
bit in R26
Interrupt Status
2 Mask
0 = Do not mask interrupt.
1 = Mask interrupt.
Each bit in R34 enables or masks the
corresponding bit in R26 The default value
for these bits is 0 (unmasked).
Table 151 System Interrupts
24.3.10 CHARGER INTERRUPTS
The system interrupt CHG_INT interrupt comprises several second-level interrupts for the battery
charger. Each of these has a status bit in Register R25 and a mask bit in Register R33, as defined in
Table 152.
ADDRESS
BIT
LABEL
DESCRIPTION
Battery temp too hot.
R25 (19h)
15
CHG_BATT_HOT_EINT
Interrupt Status
1
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery temp too cold.
14
13
12
11
10
9
CHG_BATT_COLD_EINT
CHG_BATT_FAIL_EINT
CHG_TO_EINT
(Rising Edge triggered)
Note: This bit is cleared once read.
Battery fail.
(Rising Edge triggered)
Note: This bit is cleared once read.
Charger timeout.
(Rising Edge triggered)
Note: This bit is cleared once read.
Charging final stage.
CHG_END_EINT
(Rising Edge triggered)
Note: This bit is cleared once read.
Charging started.
CHG_START_EINT
CHG_FAST_RDY_EINT
(Rising Edge triggered)
Note: This bit is cleared once read.
Indicates that the charger is ready to go
into fast charge.
(Rising Edge triggered)
Note: This bit is cleared once read.
PD, February 2011, Rev 4.4
205
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
