WM8955BLGECOSLASHRV datasheet(27/44 Pages) WOLFSON

Part #	WM8955BLGECO/RV

Description	Stereo DAC For Portable Audio Applications

PDF	44 Pages

Scroll/Zoom	100%

Manufacturer	WOLFSON [Wolfson Microelectronics plc]

Direct Link	http://www.wolfsonmicro.com

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27 / 44 page

Production Data

WM8955BL

PD Rev 4.1 February 2007

Figure 13 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 DACLRC 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 14 I

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

In DSP mode, the left channel MSB is available on either the first or second rising edge of BCLK

(selectable by LRP) following a rising edge of DACLRC. 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.

Figure 15 DSP Mode Audio Interface (Mode A; LRP = 0)

WM8955BLGECO/RV Datasheet(PDF) 27 Page - Wolfson Microelectronics plc