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GS3470 Datasheet(PDF) 73 Page - Semtech Corporation |
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GS3470 Datasheet(HTML) 73 Page - Semtech Corporation |
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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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