GS1503 Gennum Corporation, GS1503 Datasheet - Page 24

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

1.6.5 Audio Channel Status CRC Error Detection
In AES/EBU audio mode, the GS1503 will check the
Channel Status CRC for errors. If any Channel Status CRC
errors are detected in an AES/EBU audio input channel pair,
the corresponding bit in Host Interface register 011h will be
set HIGH. In serial audio input mode, the CRC error flags
are always set LOW.
Register Settings
1.6.6 Audio Input Parity Error Detection
In AES/EBU audio mode, the GS1503 will check for Audio
Parity errors. If any Audio Parity errors are detected in an
AES/EBU audio input channel pair, the corresponding bit in
Host Interface register 012h will be set HIGH. In serial audio
input mode, the Audio Parity error flags are always set
LOW.
Register Settings
1.6.7 Audio Channel Status CRC Insert Function
When bits 3-0 of Host Interface register 011h are set HIGH,
the GS1503 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
Register Settings
ACRC7/8_ERR
ACRC5/6_ERR
ACRC3/4_ERR
ACRC1/2_ERR
ACRC7/8_INS
ACRC5/6_INS
ACRC3/4_INS
ACRC1/2_INS
AP7/8_ERR
AP5/6_ERR
AP3/4_ERR
AP1/2_ERR
NAME
NAME
NAME
Ch7/8 Audio Channel Status CRC error detection
(1: Detection)
Ch5/6 Audio Channel Status CRC error detection
(1: Detection)
Ch3/4 Audio Channel Status CRC error detection
(1: Detection)
Ch1/2 Audio Channel Status CRC error detection
(1: Detection)
Ch7/8 Audio parity error detection (1: Detection)
Ch5/6 Audio parity error detection (1: Detection)
Ch3/4 Audio parity error detection (1: Detection)
Ch1/2 Audio parity error detection (1: Detection)
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)
DESCRIPTION
DESCRIPTION
DESCRIPTION
24
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.
ADDRESS
ADDRESS
011
012
ADDRESS
011
BIT
BIT
7
6
5
4
3
2
1
0
BIT
3
2
1
0
SETTING
SETTING
SETTING
-
-
-
-
-
-
-
-
1
1
1
1
DEFAULT
DEFAULT
DEFAULT
15879 - 1
0
0
0
0
0
0
0
0
0
0
0
0