GS1503B Gennum Corporation, GS1503B Datasheet - Page 67

• Manufacturer Part Number: GS1503B
• Description: Hd Embedded Audio Codec
• Manufacturer: Gennum Corporation

Table 5-21: Register Settings (CASCADE set HIGH)
5.7 Demultiplex Cascade Mode
Name
DATAIDA[1-0]
DATAIDB[1-0]
Description
Ch1-4 Audio data packet DID setting
Ch5-8 Audio data packet DID setting
When CASCADE is set HIGH (external pin or register), the GS1503B will default
to audio groups 3 and 4, where AOUT1/2 and AOUT3/4 will be demultiplexed from
audio data packets with group 3 DID, and AOUT5/6 and AOUT7/8 will be
demultiplexed from audio data packets with group 4 DID.
Two GS1503B devices can be cascaded in parallel to allow up to 16 channels of
audio to be demultiplexed (only one device requires CASCADE to be set HIGH).
Figure 5-10
the GS1503B for cascade mode, the CASCADE external pin or CASCADE bit 7 of
Host Interface register 014h is set HIGH. When set HIGH, the GS1503B will default
to audio groups 3 and 4. When set LOW, the GS1503B will default to audio groups
1 and 2.
Figure 5-10: Demultiplexing 16 Channels of Audio using Cascade Architecture
Proprietary and Confidential
Y/C b /C r [19:0]
shows the cascade architecture for a 16-channel system. To configure
+3.3V
VIN[19:0]
CASCADE
VIN[19:0]
CASCADE
GS1503B
GS1503B
37953 - 0
VOUT[19:0]
VOUT[19:0]
AOUT1/2
AOUT3/4
AOUT5/6
AOUT7/8
AOUT1/2
AOUT3/4
AOUT5/6
AOUT7/8
Address
014
014
August 2006
Audio Channels 11 & 12
Audio Channels 13 & 14
Audio Channels 15 & 16
Audio Channels 9 & 10
Audio Channels 1 & 2
Audio Channels 3 & 4
Audio Channels 5 & 6
Audio Channels 7 & 8
Y/C b /C r [19:0]
Y/C b /C r [19:0]
Bit
1-0
3-2
GS1503B Data Sheet
Group 1
Group 2
Group 3
Group 4
Table 5-19
Audio
Audio
Setting
Audio
Audio
See
Default
67 of 88
01b
00b