TW2866C datasheet(37/143 Pages) RENESAS

Part #	TW2866C

Description	4-Channel Video Decoders and Audio Codecs and Video Encoder for Security Application

PDF	143 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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37 / 143 page

TW2866C

FN8253 Rev. 0.00

Page 37 of 143

February 3, 2012

SERIAL AUDIO INTERFACE

There are 3 kinds of digital serial audio interfaces in the TW2866, the first is a recording output, the

second is a mixing output and the third is a playback input. These 3 digital serial audio interfaces follow a

standard I2S or DSP interface as shown in Figure 25.

MSB

LSB

MSB

LSB

MSB

1/fs

ASYN

ACLK

ADAT

Data 1

Data 2

(a) I2S Format

MSB

LSB

MSB

LSB

MSB

1/fs

ASYN

ACLK

ADAT

Data 1

Data 2

(b) DSP Format

FIGURE 25. TIMING CHART OF SERIAL AUDIO INTERFACE

PLAYBACK INPUT

The serial interface using the ACLKP, ASYNP and ADATP pins accepts the digital serial audio data for the

playback purpose. The ACLKP and ASYNP pins can be operated as master or slave mode. For master

mode, these pins work as output pin and generate the standard audio clock and synchronizing signal. For

slave mode, these pins are input mode and accept the standard audio clock and synchronizing signal. The

ADATP pin is always input mode regardless of operating mode. One of audio data in left or right channel

should be selected for playback audio by the PB_LRSEL.

TW2866C Datasheet(PDF) 37 Page - Renesas Technology Corp