wm8351 Wolfson Microelectronics plc, wm8351 Datasheet - Page 208

no-image

wm8351

Manufacturer Part Number
wm8351
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
wm8351CGBE/RV
Manufacturer:
WOLFSON
Quantity:
2 642
Part Number:
wm8351G
Manufacturer:
WOLFSON
Quantity:
20 000
Part Number:
wm8351GEB/RV
Manufacturer:
ST
Quantity:
3 186
WM8351
25 TEMPERATURE SENSING
25.1 CHIP TEMPERATURE MONITORING
w
The WM8351 has a built-in sensor to monitor its internal temperature, with two levels of over-
temperature protection.
When the device temperature exceeds the thermal warning temperature, the WM8351 raises a
SYS_CHIP_GT115_EINT interrupt. If the chip temperature continues to rise, and exceeds the
thermal shutdown temperature, the SYS_CHIP_GT140_EINT interrupt is set and the device shuts
down. After a thermal shutdown, the WM8351 can only restart after its temperature has fallen below
the restart temperature.
The associated register fields are defined in Table 154.
R26 (1Ah)
Interrupt
Status 2
R34 (22h)
Interrupt
Status 2 Mask
Table 154 Temperature Sensing Interrupts
ADDRESS
2:1
BIT
2
1
SYS_CHIP_GT115_EINT
SYS_CHIP_GT140_EINT
“IM_” + name of respective bit
in R26
LABEL
Chip over 115°C temp limit.
(Rising Edge triggered)
Note: This bit is cleared once read.
Chip over 140°C temp limit.
(Rising Edge triggered)
Note: This bit is cleared once read.
Each bit in R34 enables or masks the
corresponding bit in R26. The default
value for these bits is 0 (unmasked).
DESCRIPTION
PD, June 2009, Rev 4.1
Production Data
208

Related parts for wm8351