wm8352 Wolfson Microelectronics plc, wm8352 Datasheet - Page 99
wm8352
Manufacturer Part Number
wm8352
Description
Wolfson Audioplus? Stereo Codec With Power Management
Manufacturer
Wolfson Microelectronics plc
Datasheet
1.WM8352.pdf
(335 pages)
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13.12 ADDITIONAL CODEC FUNCTIONS
w
13.12.1 HEADPHONE JACK DETECT
The IN2L and IN2R pins can be selected as headphone jack detect inputs, to enable automatic
control of the analogue outputs when a headphone is plugged into a jack socket.
Jack Detection on the IN2L or IN2R pins is enabled by register bits JDL_ENA or JDR_ENA
respectively. When Jack Detection is enabled, the associated second level interrupts
CODEC_JCK_DET_L_EINT and CODEC_JCK_DET_R_EINT indicate the status of the jack socket.
See Section 13.12.7 for further details.
The Headphone Jack Detect function requires the internal slow clock to be enabled - see
Section 12.3.6.
Table 47 Headphone Jack Detect
R77 (4Dh)
Jack Detect
REGISTER
ADDRESS
BIT
15
14
JDL_ENA
JDR_ENA
LABEL
DEFAULT
0
0
Jack Detect Enable for inputs connected
to IN2L
0 = disabled
1 = enabled
Jack Detect Enable for input connected
to IN2R
0 = disabled
1 = enabled
DESCRIPTION
PD, June 2009, Rev 4.1
WM8352
99
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