WM8351 datasheet(98/330 Pages) WOLFSON

Part #	WM8351

Description	Wolfson AudioPlus??Stereo CODEC with Power Management

PDF	330 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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98 / 330 page

WM8351

Production Data

PD, April 2012, Rev 4.5

13.12 ADDITIONAL CODEC FUNCTIONS

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.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R77 (4Dh)

Jack Detect

JDL_ENA

Jack Detect Enable for inputs connected

to IN2L

0 = disabled

1 = enabled

JDR_ENA

Jack Detect Enable for input connected

to IN2R

0 = disabled

1 = enabled

Table 48 Headphone Jack Detect

WM8351 Datasheet(PDF) 98 Page - Wolfson Microelectronics plc