WM8758 datasheet(55/90 Pages) WOLFSON

Part #	WM8758

Description	Stereo CODEC with Headphone Driver and Line Out

PDF	90 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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55 / 90 page

Production Data

WM8758B

PD, Rev 4.4, January 2012

Figure 27 LOUT2 and ROUT2 Headphone Configuration with Feedback

Figure 28 LOUT2 and ROUT2 Line Output Configuration with Feedback

The signal output on LOUT2/ROUT2 comes from the Left/Right Mixer circuits and can be any

combination of the DAC output and the bypass path (output of the input boost stage). The

LOUT2/ROUT2 volume is controlled by the LOUT2VOL/ ROUT2VOL register bits. Gains over 0dB

may cause clipping if the input signal is too high. The LOUT2MUTE/ ROUT2MUTE register bits

cause these outputs to be muted (the output DC level is driven out). The output pins remain at the

same DC level, so that no click noise is produced when muting or un-muting.

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R49

LINE_COMEN

Line common ground enable:

1 = Use external common ground

0 = use internal VMID

Function inverts if MODE = 2-wire

And CSB/GPIO1 = ‘hi’

0 = Use external common ground

1 = Use internal VMID

Table 34 Line Common Control

WM8758 Datasheet(PDF) 55 Page - Wolfson Microelectronics plc