GS1503B Gennum Corporation, GS1503B Datasheet - Page 33

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

4.6.7 Audio Channel Status CRC Insert Function
Table 4-21: Register Settings
4.7 Audio Data Packets
4.7.1 Audio Data Packet Structure
Name
ACRC7/8_INS
ACRC5/6_INS
ACRC3/4_INS
ACRC1/2_INS
Description
Ch7/8 Audio Channel Status CRC insertion (1: Insertion)
Ch5/6 Audio Channel Status CRC insertion (1: Insertion)
Ch3/4 Audio Channel Status CRC insertion (1: Insertion)
Ch1/2 Audio Channel Status CRC insertion (1: Insertion)
When bits 7-4 of Host Interface register 011h are set HIGH, the GS1503B will
re-calculate the Channel Status CRC word for the corresponding audio input
channel pair. The re-calculated Channel Status CRC word is multiplexed into the
audio data packet as per SMPTE 299M. When bits 3-0 of Host Interface register
011h are set LOW, the Channel Status CRC word is not updated and the existing
Channel Status CRC word will be multiplexed. In serial audio input mode, these
registers should be set LOW.
Figure 4-15
299M. The audio data packets are multiplexed into the Chroma channel of the
video data stream.
packet words. Note that the GS1503B will automatically generate certain audio
data packet words.
Figure 4-15: Audio Data Packet Structure
Proprietary and Confidential
shows the structure of the audio data packets as defined in SMPTE
ECC Protected
Table 4-22
37953 - 0
lists the description of the individual audio data
User Data Words
Address
August 2006
011
011
011
011
Bit
GS1503B Data Sheet
7
6
5
4
Setting
1
1
1
1
Default
33 of 88
0
0
0
0