GS1503 Gennum Corporation, GS1503 Datasheet - Page 47
GS1503
Manufacturer Part Number
GS1503
Description
HD Embedded Audio Codec
Manufacturer
Gennum Corporation
Datasheet
1.GS1503.pdf
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2.6 AUDIO DATA PROCESSING
2.6.1 Digital Audio Output Format
The GS1503 has two audio output formats, AES/EBU digital
audio output and serial output, as listed in Table 11. The
serial audio output can be formatted in the following two
modes. See Figure 36:
24-bit Left Justified; MSB first
24-bit Right Justified; MSB last
The audio output format is configured using the AM[1:0]
external pins or via AM[1:0] bits 1-0 in Host Interface
register 010h. To configure the audio output format via the
Host Interface, AM_SEL bit 7 in Host Interface register 010h
must be set HIGH. The GS1503 will default to the AM[1:0]
external pin setting.
NOTE: When configured in AES/EBU audio mode, the
GS1503 will not output a 48kHz (fs) word clock at the
WCOUTA and WCOUTB pins.
Register Settings
WCOUTA/WCOUTB
(AES/EBU)
AM_SEL
AM[1:0]
NAME
MODE0
MODE1
MODE2
23
MSB
0
Preamble
Sync
0: External pin setting
1: Register setting
Audio output format selection (AM[1] is MSB)
3 4
LSB
0
24-bit Audio Sample Word
DESCRIPTION
Channel 1
Channel Status Bit
Fig. 36 Audio Output Formats
User Data Bit
Validity Bit
Parity Bit
0
47
2728293031
V U C P
Table 11: Audio Output Formats
AM[1:0]
23
23
0
1
2
MSB
0
Preamble
Sync
3 4
ADDRESS
Serial audio output: 24-bit Left Justified; MSB first
Serial audio output: 24-bit Right Justified; MSB last
AES/EBU audio output
010
LSB
0
AUDIO OUTPUT FORMAT
24-bit Audio Sample Word
BIT
1-0
Channel 2
7
SETTING
Table 11
See
1
0
2728293031
DEFAULT
V U C P
15879 - 1
0
0
23
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