GS9023B 查看數據表（PDF） - Gennum -> Semtech

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GS9023B

GENLINX® II GS9023B Embedded Audio CODEC

Gennum -> Semtech 

Table 1-1: Pin Descriptions (Continued)

Number

11, 23, 25, 29, 50,

58, 71, 82, 98, 100

18

Symbol

GND

RESET

19

WCINA

20

WCINB

21

22

24

27, 28, 75

30

AINA

AINB

PCLK

TEST

SAFA

31

SAFB

32

VFLA

33

VFLB

34

UDA

Type

Description

Device ground.

I

Device reset. Active low.

NOTE: The video input to output data path will be interrupted during device

reset.

I

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.

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.

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.

I

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.

I

Video clock signal input.

–

Connect to ground.

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.

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.

I/O 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.

I/O 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.

I/O 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

37954 - 2

December 2009

6 of 56

Proprietary & Confidential

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