Table 1-1: Pin Descriptions (Continued)
Number
Symbol
Type
Description
11, 23, 25, 29, 50,
58, 71, 82, 98, 100
GND
Device ground.
18
RESET
I
I
Device reset. Active low.
NOTE: The video input to output data path will be interrupted during device
reset.
19
WCINA
48kHz word clock for channels 1 and 2. Used only when operating in Multiplex
Mode and when the audio source is not an AES/EBU data stream. This pin should
be grounded when inputting AES/EBU digital audio data or when operating in
Demultiplex Mode.
20
WCINB
I
48kHz word clock for channels 3 and 4. Used only when operating in Multiplex
Mode and when the audio source is not an AES/EBU data stream. This pin should
be grounded when inputting AES/EBU digital audio data or when operating in
Demultiplex Mode.
21
22
AINA
AINB
I
I
Audio signal input for channels 1 and 2. AES/EBU digital audio data is bi-phase
mark encoded. For all non-AES/EBU input modes, bi-phase mark encoding is not
required.
Audio signal input for channels 3 and 4. AES/EBU digital audio data is bi-phase
mark encoded. For all non-AES/EBU input modes, bi-phase mark encoding is not
required.
24
PCLK
TEST
SAFA
I
–
Video clock signal input.
Connect to ground.
27, 28, 75
30
I/O
Start of audio frame indicator for channels 1 and 2. Valid only for non-AES/EBU
audio formats. This pin should be grounded when inputting AES/EBU audio data.
SAFA is HIGH for audio frame 0 and LOW for all other audio frames. In Multiplex
Mode, this pin is an input and is supplied by the user. In Demultiplex Mode, this
pin is an output and is generated by the GS9023B.
31
32
33
34
SAFB
VFLA
VFLB
UDA
I/O
I/O
I/O
I/O
Start of audio frame indicator for channels 3 and 4. Valid only for non-AES/EBU
audio formats. This pin should be grounded when inputting AES/EBU audio data.
SAFB is set to HIGH for audio frame 0 and LOW for all other audio frames. In
Multiplex Mode, this pin is an input and is supplied by the user. In Demultiplex
Mode, this pin is an output and is generated by the GS9023B.
Validity flag for channels 1 and 2. Valid only for non-AES/EBU audio formats. This
pin should be grounded when inputting AES/EBU audio data. VFLA is HIGH when
audio is invalid and LOW when audio is valid. In Multiplex Mode, this pin is an
input and is supplied by the user. In Demultiplex Mode, this pin is an output and
is generated by the GS9023B.
Validity flag for channels 3 and 4. Valid only for non-AES/EBU audio formats. This
pin should be grounded when inputting AES/EBU audio data. VFLB is HIGH when
audio is invalid and LOW when audio is valid. In Multiplex Mode, this pin is an
input and is supplied by the user. In Demultiplex Mode, this pin is an output and
is generated by the GS9023B.
User data for channels 1 and 2. Valid only for non-AES/EBU audio formats. This
pin should be grounded when inputting AES/EBU audio data. In Multiplex Mode,
this pin is an input and is supplied by the user. In Demultiplex Mode, this pin is an
output and is generated by the GS9023B.
GS9023B GENLINX® II GS9023B Embedded Audio
CODEC
Data Sheet
6 of 56
Proprietary & Confidential
37954 - 2
December 2009
GENNUM [ GENNUM CORPORATION ]
