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WM8950 Datasheet(PDF) 28 Page - Wolfson Microelectronics plc

Part # WM8950
Description  ADC WITH MICROPHONE INPUT AND PROGRAMMABLE DIGITAL FILTERS
PDF  52 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8950 Datasheet(HTML) 28 Page - Wolfson Microelectronics plc

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WM8950
Preliminary Technical Data
w
PTD Rev 2.1 June 2005
28
A dedicated buffer is available for tieing off unused analogue input pins as shown below Figure 13.
This buffer can be enabled using the BUFIOEN register bit.
Figure 13 Unused Input Pin Tie-off Buffers
THERMAL SHUTDOWN
To protect the WM8950 from overheating a thermal shutdown circuit is included. If the device
temperature reaches approximately 125
0C and the thermal shutdown circuit is enabled (TSDEN=1),
an interrupt can be generated. See the GPIO and Interrupt Controller section for details.
REGISTER
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
R49
Output control
1
TSDEN
1
Thermal Shutdown Enable
0 : thermal shutdown disabled
1 : thermal shutdown enabled
Table 23 Thermal Shutdown



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