GS2970A Datasheet, PDF (94/150 Pages) Gennum Corporation – Integrated audio clock generator

Table 4-25:Audio Mute Control Bits
Name
MUTE_ALL
MUTE8
MUTE7
MUTE6
MUTE5
MUTE4
MUTE3
MUTE2
MUTE1
Description
Ch1-8 audio mute enable (1: Enabled)
Ch8 audio mute enable (1: Enabled)
Ch7 audio mute enable (1: Enabled)
Ch6 audio mute enable (1: Enabled)
Ch5 audio mute enable (1: Enabled)
Ch4 audio mute enable (1: Enabled)
Ch3 audio mute enable (1: Enabled)
Ch2 audio mute enable (1: Enabled)
Ch1 audio mute enable (1: Enabled)
Default
0
0
0
0
0
0
0
0
0
Mute On Loss Of Lock
When the GS2970A 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.
4.19.4 Error Reporting
4.19.4.1 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
AUDIO_ERROR_STAT_X register is set HIGH. When the 1-255 count sequence in the
DBN word of Group B audio data packets is discontinuous, the DBNB_ERR bit in the
AUDIO_ERROR_STAT_X register is set HIGH.
The DBNA_ERR and DBNB_ERR flags also have associated SD_AUDIO_ERROR_MASK
and HD_AUDIO_ERROR_MASK register flags for configuration of error reporting in the
Receiver. The DBNA_ERR and DBNB_ERR flags remains set until cleared by writing to
these locations.
4.19.4.2 ECC Error
The GS2970A monitors the ECC error status of the two selected audio groups, as
described in Section 4.19.2.6 on page 86.
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.
GS2970A 3Gb/s, HD, SD SDI Receiver
Data Sheet
54244 - 2
September 2012
94 of 150