GS2972 Datasheet, PDF (111/125 Pages) Semtech Corporation – 3G/HD/SD-SDI Serializer with Complete SMPTE Audio & Video Support

4.14.3 HD and 3G Audio Core Registers
Table 4-36: HD and 3G Audio Core Configuration and Status Registers
Address Register Name Bit Name
CTR_AGR
AGR
ONE_AGR
800h
CTRB_ON
ASXB
CFG_AUD
AFNB_AUTO
CTRA_ON
ASXA
AFNA_AUTO
ANF_OFS
IDB
801h
IDA
RSVD
RSVD
Bit Description
R/W Default
Selects replacement of audio
control packets.
15 ^{LOW - Do not replace audio control} R/W
0
packets
HIGH - Replace all audio control
packets
14
Selects Audio Group Replacement
operating mode. Active HIGH.
R/W
0
Specifies the replacement of just
the primary group.
13 ^{LOW - Replace both the primary}
R/W
0
and secondary groups.
HIGH - Replace only the primary
group.
Specifies the embedding of the
12 secondary group audio control
packets. Active HIGH.
R/W
1
11
Secondary Group asynchronous
mode. Active HIGH.
R/W
0
Enables Secondary group audio
10 frame number generation. Active
R/W
1
HIGH.
Specifies the embedding of primary
9
group audio control packets. Active R/W
1
HIGH.
8
Primary Group asynchronous mode. R/W
0
7
Enables Primary group audio frame
number generation.
R/W
1
Offset to add to generated Audio
6-4 Frame Number. Must be in the
R/W
0
range of 0 to 4.
Specifies the Secondary audio
group to embed.
3-2 ^{00: Audio group #1}
01: Audio group #2
10: Audio group #3
11: Audio group #4
R/W
1
Specifies the Primary audio group
to embed.
1-0 ^{00: Audio group #1}
01: Audio group #2
10: Audio group #3
11: Audio group #4
R/W
0
15-0 Reserved.
R
0
GS2972 3G/HD/SD-SDI Serializer with Complete
SMPTE Audio & Video Support
Final Data Sheet Rev. 9
GENDOC-047479 September 2013
www.semtech.com
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