WM8960 datasheet(37/92 Pages) WOLFSON

Part #	WM8960

Description	Stereo CODEC with 1W Stereo Class D Speaker Drivers and Headphone Drivers for Portable Audio Applications

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Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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Production Data

WM8960

w

PD, August 2013, Rev 4.2

37

REGISTER

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

R38 (26h)

Mono Out Mix

(1)

7

L2MO

0

Left Output Mixer to Mono Output Mixer

Control

0 = Left channel mix disabled

1 = Left channel mix enabled

R39 (27h)

Mono Out Mix

(2)

7

R2MO

0

Right Output Mixer to Mono Output

Mixer Control

0 = Right channel mix disabled

1 = Right channel mix enabled

R42 (2Ah)

Mono Out

Volume

6

MOUTVOL

1

Mono Output Mixer Volume Control

0 = 0dB

1 = -6dB

Table 23 Output Mixer Enable Control

When left and right inputs to the mono mixer are both disabled, the mono mixer will output VMID.

ANALOGUE OUTPUTS

HP_L AND HP_R OUTPUTS

The HP_L and HP_R pins can drive a 16

 or 32 headphone or a line output (see Headphone

Output and Line Output sections, respectively). The signal volume on HP_L and HP_R can be

independently adjusted under software control by writing to LOUT1VOL and ROUT1VOL,

respectively. Note that gains over 0dB may cause clipping if the signal is large. Any gain setting below

0101111 (minimum) mutes the output driver. The corresponding output pin remains at the same DC

level (the reference voltage on the VREF pin), so that no click noise is produced when muting or un-

muting.

A zero cross detect on the analogue output may also be enabled when changing the gain setting to

minimize audible clicks and zipper noise as the gain updates. If zero cross is enabled a timeout is

also available to update the gain if a zero cross does not occur. This function may be enabled by

setting TOEN in register R23 (17h). The timeout period is set by TOCLKSEL. Note: SYSCLK must be

enabled to use this function.

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WM8960 Datasheet(PDF) 37 Page - Wolfson Microelectronics plc

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