GS1503B Gennum Corporation, GS1503B Datasheet - Page 62

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

5.6.2.2 Serial Audio Output Modes
AOUT1/2, AOUT3/4
AOUT5/6, AOUT7/8
WCOUTA/B
ACLKA/B
Y/C b / C r [19:0]
6.144MHz (128 fs)
6.144MHz (128 fs)
A 6.144MHz (128fs) audio clock must be supplied to the ACLKA and ACLKB
inputs. An audio word clock at 48kHz (fs) will be output at the WCOUTA and
WCOUTB external pins, as shown in
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 DEC_MODE (external pin or register setting) is set LOW, the audio word
clock inputs WCINB and WCINB should be grounded.
Figure 5-8: Serial Audio Output Configuration and Timing
Proprietary and Confidential
VIN[19:0]
ACLKA
ACLKB
64 CLKs
GS1503B
37953 - 0
WCOUTB
WCOUTA
AOUT1/2
AOUT3/4
AOUT5/6
AOUT7/8
Figure
August 2006
5-8.
Audio Channels 1 & 2
Audio Channels 3 & 4
Audio Channels 5 & 6
Audio Channels 7 & 8
GS1503B Data Sheet
64 CLKs
48kHz (fs)
48kHz (fs)
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