WM8775 datasheet(17/36 Pages) WOLFSON

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WM8775

PP Rev 1.8, June 2004

LEFT CHANNEL

RIGHT CHANNEL

ADCLRC

BCLK

DOUT

1/fs

n-2 n-1

LSB

MSB

n-2 n-1

LSB

MSB

Figure 13 Right Justified Mode Timing Diagram

2S MODE

In I

2S mode, the MSB of the ADC data is output on DOUT and changes on the first falling edge of

BCLK following an ADCLRC transition and may be sampled on the rising edge of BCLK. ADCLRC is

low during the left samples and high during the right samples.

LEFT CHANNEL

RIGHT CHANNEL

ADCLRC

BCLK

DOUT

1/fs

n-2 n-1

LSB

MSB

n-2 n-1

LSB

MSB

1 BCLK

Figure 14 I

2S Mode Timing Diagram

DSP EARLY MODE

The MSB of the left channel ADC data is output on DOUT and changes on the first falling edge of

BCLK following a low to high ADCLRC transition and may be sampled on the rising edge of BCLK.

The right channel ADC data is contiguous with the left channel data (Figure 15)

ADCLRC

BCK

DOUT

Word Length (WL)

1/fs

LEFT CHANNEL

n-1

LSB

MSB

n-1

RIGHT CHANNEL

NO VALID DATA

1 BCLK

Figure 15 DSP Early Mode Timing Diagram – ADC Data Output

WM8775 Datasheet(PDF) 17 Page - Wolfson Microelectronics plc

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