Table 1-1: Pin Descriptions (Continued)
Number
Symbol
Type
Description
35
UDB
I/O
User data for channels 3 and 4. 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.
36
37
38
CSA
I/O
I/O
I/O
Channel status 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.
CSB
Channel status for channels 3 and 4. 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.
AUXEN
Extended audio enable. When HIGH, the GS9023B processes 24-bit audio
samples. When LOW, the GS9023B processes 20-bit samples. In Multiplex Mode,
this pin is an input and is supplied by the user. The setting is logical OR with the
related A4ON setting in host interface register address 1h. In Demultiplex Mode,
this pin is an output and is generated by the GS9023B.
39, 51, 67, 76
40-48
VDDIO
+3.3V or +5V power supply pins for device I/Os. In order for device I/O to be +5V
tolerant V
must be +5V. Device I/O are not +5V tolerant if V
is +3.3V.
DDIO
DDIO
PKT[8:0]
I/O
I/O
Arbitrary data I/O bus. In Multiplex Mode, the user must input the arbitrary data
packet words starting from the secondary data identification (SDID) to the last
user data word (UDW) according to SMPTE 291M. The GS9023B internally
converts the data to 10 bits by generating the inversion bit (bit 9). The checksum
(CS) word is also generated internally. In Demultiplex Mode, the GS9023B
outputs the arbitrary data packet words starting from the SDID to the last UDW.
PKT[8] is the MSB and PKT[0] is the LSB. See Figure 3-11 and Figure 3-16.
49
PKTEN
Arbitrary data packet enable. In Multiplex Mode, PKTEN must be set HIGH one
PCLK cycle before Arbitrary packet data is input to the device. In Demultiplex
Mode, the output is set HIGH when outputting Arbitrary packet data. See
Figure 3-11 and Figure 3-16.
52, 69
53
NC
N/A
O
No Connect. Do not connect these pins.
WCOUT
48kHz word clock for channels 1, 2, 3 and 4. Valid only when operating in
Demultiplex Mode.
54
AOUTB
O
O
O
Audio signal output for channels 3 and 4. The AES/EBU digital audio output is
bi-phase mark encoded. In all non-AES/EBU modes, the output is not bi-phase
mark encoded.
55
AOUTA
Audio signal output for channels 1 and 2. The AES/EBU digital audio output is
bi-phase mark encoded. In all non-AES/EBU modes, the output is not bi-phase
mark encoded.
56, 57, 59-66
DOUT[9:0]
Parallel digital video signal output. DOUT[9] is the MSB and DOUT[0] is the LSB.
GS9023B GENLINX® II GS9023B Embedded Audio
CODEC
Data Sheet
7 of 56
Proprietary & Confidential
37954 - 2
December 2009
GENNUM [ GENNUM CORPORATION ]
