GS1503BCVE2 GENNUM [Gennum Corporation], GS1503BCVE2 Datasheet - Page 60

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

Figure 5-6: Audio Output Formats
5.6.2 Digital Audio Output Timing
5.6.2.1 AES/EBU Format Output
A 6.144MHz (128fs) audio clock must be supplied to the ACLKA and ACLKB inputs.
ACLKA is used to clock AES/EBU digital audio signal for channels 1 to 4 (AOUT1/2 and
AOUT3/4). ACLKB is used to clock AES/EBU digital audio signal for channels 5 to 8
(AOUT5/6 and AOUT7/8). In AES/EBU output mode, the audio word clock inputs
WCINB and WCINB should be grounded. See
The user can access the Audio Channel Status Block information via the
AUDIO_CS[183:0] bits in Host Interface registers 058h to 06Eh. To read the Audio
Channel Status information, the CS_MODE bit 3 of Host Interface register 06Fh should
be set HIGH. The embedded audio channel from which the Channel Status information
is to be extracted is set in the CH_SEL[2:0] bits 2-0 of Host Interface register 06Fh. The
CH_SEL[2:0] setting for audio channel 1 is 000b, through to 111b for channel 8. The
CS_RQST bit must be set HIGH to begin the process of extracting the Audio Channel
Status information. Once extracted, the GS1503B will set CS_WEND bit HIGH and the
user can access the data for Host Interface registers 058h to 06Eh.
When CS_MODE is set LOW, the Audio Channel Status information in the AES/EBU
audio outputs will be replaced with data programmed in the AUDIO_CS[183:0] bits of
Host Interface registers 058h to 06Eh.
Table 5-15: Register Settings
GS1503B HD Embedded Audio CODEC
Data Sheet
37953 - 1
WCOUTA/WCOUTB
Name
CS_WEND
CS_RQST
(AES/EBU)
MODE0
MODE1
MODE2
December 2009
23
MSB
0
Preamble
Sync
Description
Audio Channel Status write flag
(1: Data ready)
Audio Channel Status request
(1: enable)
3 4
LSB
0
24-bit Audio Sample Word
Channel 1
Channel Status Bit
Figure 5-7
User Data Bit
Validity Bit
Parity Bit
0
for timing.
2728293031
V U C P
23
23
MSB
0
Preamble
Sync
Address
3 4
06F
06F
LSB
0
Bit
24-bit Audio Sample Word
5
4
Channel 2
Setting
1
–
0
2728293031
Default
V U C P
0
0
60 of 90
23