GS1503BCVE2 GENNUM [Gennum Corporation], GS1503BCVE2 Datasheet - Page 36

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

4.9 Multiplex Cascade Mode
Two GS1503B devices can be cascaded in series to allow up to 16 channels of audio to
be multiplexed (only one device requires CASCADE to be set HIGH).
the cascade architecture for a 16-channel system. To configure 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 4-16: Multiplexing 16 Channels of Audio using Cascade Architecture
Table 4-28: Register Settings
When CASCADE is set LOW, the GS1503B will multiplex audio data and control packets
as shown in
shown). Any existing audio data or control packets will be deleted and replaced with
blanking data before the new packets are multiplexed. New packets are multiplexed
immediately after the two video line CRC words.
When CASCADE is set HIGH, the GS1503B will multiplex the audio data and control
packets immediately after the existing packets, as shown in
multiplexing new ancillary data packets with the same audio group DID as existing
packets.
GS1503B HD Embedded Audio CODEC
Data Sheet
37953 - 1
Group 1
Group 2
Audio
Audio
Name
CASCADE
Y/C b /C r [19:0]
Audio Channels 1 & 2
Audio Channels 3 & 4
Audio Channels 5 & 6
Audio Channels 7 & 8
Figure 4-17
December 2009
Description
Cascade enable (1: Enabled)
(NOTE: Only the Chroma channel of the video data stream is
VIN[19:0]
AIN1/2
AIN3/4
AIN5/6
AIN7/8
CASCADE
GS1503B
VOUT[19:0]
Group 3
Group 4
Audio
Audio
Y/C b /C r [19:0]
Audio Channels 9 & 10
Audio Channels 11 & 12
Audio Channels 13 & 14
Audio Channels 15 & 16
Figure
4-18. Avoid
Figure 4-16
Address
+3.3V
014
VIN[19:0]
AIN1/2
AIN3/4
AIN5/6
AIN7/8
CASCADE
shows
GS1503B
Bit
7
VOUT[19:0]
Setting
1
Y/C b /C r [19:0]
Default
0
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