GS1503 Gennum Corporation, GS1503 Datasheet - Page 37

• Manufacturer Part Number: GS1503
• Description: HD Embedded Audio Codec
• Manufacturer: Gennum Corporation

Table 8: Multiplex Mode Host Interface Registers (Continued)
CONTROL
Control
Packet
Packet
Audio
Audio
ITEM
Data
DATAIDB[1:0]
DATAIDA[1:0]
CTRIDB[1:0]
CHACT[7-0]
CASCADE
CAS_ERR
AMUTEB
AMUTEA
CTRONB
NAME
RSV
Audio channel multiplex enable. When set HIGH,
the corresponding audio channel is multiplexed
into the Chroma video data stream. "CHACT[7]"
corresponds to audio input channel 8 and
"CHACT[0]" corresponds to audio input channel 1.
When all bits are set LOW, no audio data packets
will be multiplexed and the GS1503 will be in
bypass mode.
Cascade select. When set HIGH, the GS1503 will
default to audio groups 3 and 4. When set LOW,
the GS1503 will default to audio groups 1 and 2.
NOTE: The status of the CASCADE external pin is
not updated in this register. The value
programmed in this register is logical OR'd with
the CASCADE external pin setting.
Cascade connection error detection. When set
HIGH, existing audio data packets have been
detected with the same audio group DID as set in
"DATAIDA[1:0]" and "DATAIDB[1:0]" registers.
Valid only when CASCADE (external pin or
register) is set HIGH
Ch5-8 audio mute enable. When set HIGH, the
multiplexed audio packets for audio channels 5 to
8 are forced to zero.
NOTE: The status of the MUTE external pin is not
updated in this register. The value programmed in
this register is logical OR'd with the MUTE
external pin setting.
Ch1-4 audio mute enable. When set HIGH, the
multiplexed audio packets for audio channels 1 to
4 are forced to zero.
NOTE: The status of the MUTE external pin is not
updated in this register. The value programmed in
this register is logical OR'd with the MUTE
external pin setting.
Ch5-8 audio group DID setting. Designates the
audio group DID for audio channels 5 to 8.
See Table 5. When CASCADE (external pin or
register) is set HIGH, the default setting is audio
group 2. When CASCADE is set HIGH, the default
setting is audio group 4.
Ch1-4 audio group DID setting. Designates the
audio group DID for audio channels 1 to 4.
Table 5. When CASCADE (external pin or register)
is set HIGH, the default setting is audio group 1.
When CASCADE is set HIGH, the default setting is
audio group 3.
Not used.
Ch5-8 audio control packet multiplex enable.
When set HIGH, the audio control packets for
audio channels 5 to 8 will be multiplexed into the
Luma channel of the video data stream.
Ch5-8 audio control packet DID setting.
Designates the audio control packet DID for audio
channels 5 to 8. See Table 7. The default setting is
audio group 2.
DESCRIPTION
37
See
ADDRESS
013
014
020
BIT
7-0
3-2
1-0
7-3
1-0
7
6
5
4
2
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R
-
DEFAULT
15879 - 1
FFh
10b
11b
10b
0
0
0
0
0
1