GS3470 datasheet(73/169 Pages) SEMTECH

номер детали	GS3470

подробное описание детали	3G, HD, SD SDI Receiver

PDF	169 Pages

Scroll/Zoom	100%

производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

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73 / 169 page

GS3470

Final Data Sheet

Rev.8

PDS-060500

September 2017

73 of 169

Semtech

www.semtech.com

4.19.1 Serial Audio Data I/O Signals

The Serial Audio Data I/O pins are listed in Table 4-15: Serial Audio Pin Descriptions.

The timing of the serial audio out signals, the WCLK output signal and the ACLK output

is shown in Figure 4-45: ACLK to Data Signal Output Timing.

When AUDIO_EN/DIS pin is set HIGH, audio extraction is enabled and the audio output

signals are extracted from the video data stream. When set LOW, the serial audio

outputs, ACLK, and WCLK outputs are set LOW.

In addition, all functional logic associated with audio extraction is disabled to reduce

power consumption.

Table 4-15: Serial Audio Pin Descriptions

Pin Name

Description

AUDIO_EN/DIS

Enable Input for Audio Processing

AOUT_1_2

Serial Audio Output; Channels 1 and 2

AOUT_3_4

Serial Audio Output; Channels 3 and 4

AOUT_5_6

Serial Audio Output; Channels 5 and 6

AOUT_7_8

Serial Audio Output; Channels 7 and 8

ACLK

64fs Audio Bit Clock

WCLK

Word Clock

AMCLK

Audio Master Clock, selectable 128fs, 256fs, or 512fs

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