GS1671 datasheet(65/130 Pages) SEMTECH

65 / 130 page

GS1671 HD/SD SDI Integrated Receiver

Data Sheet

53737 - 2

September 2012

65 of 130

NOTE 1: After the ancillary data determined by the ANC_TYPE_X_APX registers has

been deleted, other existing ancillary data may not be contiguous. The device does not

concatenate the remaining ancillary data.

NOTE 2: Reading extracted ancillary data from the host interface must be performed

while there is a valid video signal present at the serial input and the device is locked

(LOCKED signal is HIGH).

4.18 Audio De-embedder

The GS1671 includes an integrated audio de-embedder which is enabled by default in

SMPTE mode. It can be disabled by setting the AUDIO_EN/DIS pin LOW, or by setting the

host interface AUD_EXT_MASK bit to HIGH, or by keeping IOPROC_EN/DIS pin LOW.

In non-SMPTE modes, the audio de-embedder is not active.

Up to eight channels of audio may be extracted from the received serial digital video

stream. The output signal formats supported by the device include AES/EBU, I2S

(default) and industry standard serial digital formats.

16, 20 and 24-bit audio bit depths are supported for 48kHz synchronous audio for SD

data rates. For HD data rate, 16, 20 and 24-bit audio bit depths are supported for 48kHz

audio. The audio may be synchronous or asynchronous to the video.

Additional audio processing features include audio mute on loss of lock, de-embed and

delete, group selection, audio output re-mapping, ECC error detection and correction

(HD mode only), and audio channel status extraction.

4.18.1 Serial Audio Data I/O Signals

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

Table 4-15: Serial Audio Pin Descriptions

Audio

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_5/6Serial Audio Output; Channels 5 and 6

AOUT_7/8

Serial Audio Output; Channels 7 and 8

ACLK

64fs clock

WCLK

Word clock

AMCLK

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

GS1671 Datasheet(PDF) 65 Page - Semtech Corporation

GS1671 Datasheet(HTML) 65 Page - Semtech Corporation

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL