GS1671 datasheet(77/130 Pages) SEMTECH

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GS1671 HD/SD SDI Integrated Receiver

Data Sheet

53737 - 2

September 2012

77 of 130

4.18.3.7 Audio Mute

When the MUTE bits in the host interface are set HIGH, the audio outputs are muted (all

audio sample bits are set to zero). To set all the audio output channels to mute, set the

host interface MUTE_ALL bit HIGH.

Mute On Loss Of Lock

When the GS1671 loses lock (LOCKED signal is LOW), the audio de-embedder sets all

audio outputs LOW (no audio formatting is performed). The ACLK, WCLK and AMCLK

outputs are also forced LOW.

4.18.4 Error Reporting

4.18.4.1 Data Block Number Error

When the 1-255 count sequence in the Data Block Number (DBN) word of Group A audio

data packets is discontinuous, the DBNA_ERR bit in the host interface (DBN_ERR

in the DBN word of Group B audio data packets is discontinuous, the DBNB_ERR bit in

the host interface (DBN_ERR register for SD, ACS_DET register for HD) register is set

HIGH.

4.18.4.2 ECC Error

The GS1671 monitors the ECC error status of the two selected audio groups, as described

in Section 4.18.2.6 on page 70.

The ECC[N]_ERROR flags also have associated SD_AUDIO_ERROR_MASK and

HD_AUDIO_ERROR_MASK register flags for configuration of error reporting in the

Receiver. The ECC[N]_ERROR flags remain set until read via the host interface.

Table 4-25: Audio Mute Control Bits

Name

Description

Default

MUTE_ALL

Ch1-8 audio mute enable (1: Enabled)0

MUTE8

Ch8 audio mute enable (1: Enabled)0

MUTE7

Ch7 audio mute enable (1: Enabled)0

MUTE6Ch6 audio mute enable (1: Enabled)0

MUTE5

Ch5 audio mute enable (1: Enabled)0

MUTE4

Ch4 audio mute enable (1: Enabled)0

MUTE3

Ch3 audio mute enable (1: Enabled)0

MUTE2

Ch2 audio mute enable (1: Enabled)0

MUTE1

Ch1 audio mute enable (1: Enabled)0

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