WM8770 datasheet(23/52 Pages) WOLFSON

부품명	WM8770

상세설명	24-bit, 192kHz 8-Channel Codec with Volume Control

PDF	52 Pages

Scroll/Zoom	100%

제조업체	WOLFSON [Wolfson Microelectronics plc]

홈페이지	http://www.wolfsonmicro.com

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23 / 52 page

Production Data

WM8770

PD Rev 4.1 June 2005

ADCLRC

BCK

DOUT

Input Word Length (IWL)

1/fs

LEFT CHANNEL

n-1

LSB

MSB

n-1

RIGHT CHANNEL

NO VALID DATA

1 BCLK

DSP EARLY MODE

In DSP early mode, the MSB of DAC channel 1 left data is sampled by the WM8770 on the second

rising edge on BCLK following a DACLRC rising edge. DAC channel 1 right and DAC channels 2, 3

and 4 data follow DAC channel 1 left data (Figure 17).

Figure 17 DSP Early Mode Timing Diagram – DAC Data Input

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 18)

Figure 18 DSP Early Mode Timing Diagram – ADC Data Output

DACLRC

BCK

DIN1

Input Word Length (IWL)

1/fs

CHANNEL 1

LEFT

n-1

LSB

MSB

n-1

CHANNEL 1

RIGHT

CHANNEL 2

LEFT

n-1

CHANNEL 4

RIGHT

NO VALID DATA

1 BCLK

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