GS1503BCVE2 GENNUM [Gennum Corporation], GS1503BCVE2 Datasheet - Page 68

• Manufacturer Part Number: GS1503BCVE2
• Description: HD Embedded Audio CODEC Data Sheet
• Manufacturer: GENNUM [Gennum Corporation]

Table 5-22: Register Settings
5.8 Audio Control Packets
5.8.1 Audio Control Packet Detection
The audio control packet detect registers will be set HIGH when a corresponding audio
group DID has been detected in the Luma channel of the input video stream. Host
Interface register 020h, bits 7-4, report the individual audio groups detected.
Table 5-23: Register Settings
5.8.2 Audio Control Packet DID Setting
To demultiplex audio control packets for audio channels 1 to 4 (AOUT1/2 and
AOUT3/4), the CTRONA bit 2 of Host Interface register 02Fh is set HIGH. To demultiplex
audio control packets for audio channels 5 to 8 (AOUT5/6 and AOUT7/8), the CTRONB
bit 2 of Host Interface register 020h is set HIGH.
The audio control packet group DID for audio output channels 1 to 4 is set in
CTRIDA[1:0] bits 1-0 of Host Interface register 02Fh. The audio control packet group DID
for audio output channels 5 to 8 is set in CTRIDB[1:0] bits 3-2 of Host Interface register
020h.
control packet group DID.
When CASCADE is set LOW (external pin or register), the GS1503B will default to audio
groups 1 and 2, where audio control packet data for channels 1 to 4 will be
demultiplexed from packets with group 1 DID, and audio control packet data for
channels 5 to 8 will be demultiplexed from packets with group 2 DID.
Control packet data is accessible via the corresponding registers in the Host Interface.
GS1503B HD Embedded Audio CODEC
Data Sheet
37953 - 1
Name
CASCADE
Name
ACPG4_DET
ACPG3_DET
ACPG2_DET
ACPG1_DET
Table 5-24
shows the 2-bit Host Interface setting for the corresponding audio
December 2009
Description
Cascade enable (1: Enabled)
Description
Audio group 4 control packet detection (1:
Audio group 3 control packet detection (1:
Audio group 2 control packet detection (1:
Audio group 1 control packet detection (1:
Detection)
Detection)
Detection)
Detection)
Address
Address
014
020
020
020
020
Bit
7
Bit
7
6
5
4
Setting
Setting
1
–
–
–
–
Default
Default
0
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0
0
0
0