WM8940CGEFLSLASHV datasheet(54/91 Pages) WOLFSON

Part #	WM8940CGEFL/V

Description	Mono CODEC with Speaker Driver

PDF	91 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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54 / 91 page

WM8940

Production Data

PD, Rev 4.3, November 2011

Figure 26 Right Justified Audio Interface (assuming n-bit word length)

In I

2S mode, the MSB is available on the second rising edge of BCLK following a FRAME transition.

The other bits up to the LSB are then transmitted in order. Depending on word length, BCLK

frequency and sample rate, there may be unused BCLK cycles between the LSB of one sample and

the MSB of the next.

Figure 27 I

2S Audio Interface (assuming n-bit word length)

In DSP/PCM mode, the left channel MSB is available on either the 1

st (Mode B) the 2nd (Mode A)

rising edge of BCLK (selectable by FRAMEP) following a rising edge of FRAME. Right channel data

immediately follows left channel data. Depending on word length, BCLK frequency and sample rate,

there may be unused BCLK cycles between the LSB of the right channel data and the next sample.

FRAMEP should be set to 0 in this mode.

Figure 28 DSP/PCM Mode Audio Interface (Mode A, FRAMEP=0)

WM8940CGEFL/V Datasheet(PDF) 54 Page - Wolfson Microelectronics plc