WM8994 datasheet(166/359 Pages) WOLFSON

Part #	WM8994

Description	Multi-Channel Audio Hub CODEC for Smartphones

PDF	359 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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166 / 359 page

WM8994

Production Data

PD, April 2012, Rev 4.4

166

n-1

n-2

n-1

n-2

LEFT CHANNEL

RIGHT CHANNEL

MSB

LSB

Input Word Length (WL)

1/fs

LRCLK

BCLK

DACDAT/

ADCDAT

Figure 54 DSP Mode Audio Interface (mode B, AIF_LRCLK_INV=1, Master)

Figure 55 DSP Mode Audio Interface (mode A, AIF_LRCLK_INV=0, Slave)

Figure 56 DSP Mode Audio Interface (mode B, AIF_LRCLK_INV=1, Slave)

Mono mode operation is available in DSP interface mode. When Mono mode is enabled, the audio

data is transmitted or received starting on either the 1

st (mode B) or 2nd (mode A) rising edge of BCLK

following a rising edge of LRCLK.

PCM operation is supported in DSP interface mode. WM8994 ADC data that is output on the Left

Channel will be read as mono PCM data by the receiving equipment. Mono PCM data received by the

WM8994 will be treated as Left Channel data. This data may be routed to the Left/Right DACs using

the control fields described in the “Digital Mixing” and “Digital Audio Interface Control” sections.

WM8994 Datasheet(PDF) 166 Page - Wolfson Microelectronics plc