WM8351GEB/V Wolfson Microelectronics, WM8351GEB/V Datasheet - Page 208

• Manufacturer Part Number: WM8351GEB/V
• Description: Audio CODECs Audio CODEC plus pwr management
• Manufacturer: Wolfson Microelectronics

Specifications of WM8351GEB/V

• Number Of Adc Inputs: 2
• Number Of Dac Outputs: 2
• Conversion Rate: 48 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, 4-Wire)
• Resolution: 12 bit
• Operating Supply Voltage: 3.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: BGA
• Minimum Operating Temperature: - 25 C
• Number Of Channels: 2 ADC/2 DAC
• Supply Current: 260 uA
• Thd Plus Noise: - 83 dB
• Audio Codec Type: Stereo
• No. Of Adcs: 2
• No. Of Dacs: 2
• No. Of Input Channels: 8
• No. Of Output Channels: 6
• Adc / Dac Resolution: 24bit
• Adcs / Dacs Signal To Noise Ratio: 95dB
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8351
25 TEMPERATURE SENSING
25.1 CHIP TEMPERATURE MONITORING
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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).
PD, March 2010, Rev 4.2
DESCRIPTION
Production Data
208