GS9023 데이터 시트보기 (PDF) - Gennum -> Semtech

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GS9023

GENLINX™II GS9023 Embedded Audio CODEC

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PIN DESCRIPTIONS (Continued)

NUMBER

SYMBOL

TYPE

DESCRIPTION

92

TRS

I

TRS Selection. Used in conjunction with the VM[2:0] pins to select video

standard format. In Multiplex Mode, when the TRS pin is HIGH, TRS is added to a

composite video signal. In Demultiplex Mode, when HIGH, TRS is removed from

a composite video signal. See Table 1.

93

EDH_INS

I

EDH Insert Selection. Valid in Multiplex Mode only. When set HIGH, the GS9023

performs EDH functions according to SMPTE RP165. When set LOW, EDH is not

inserted.

NOTE: Active picture and full field data words are updated from recalculated

values but error flag information is replaced with the values programmed in the

internal registers via the Host Interface.

94

MUTE

I

Audio mute. In Multiplex Mode, when set HIGH, the embedded audio packets

are forced to ‘0’. In Demultiplex Mode, when set HIGH, the output data is forced

to “0”.

95-97

AM[2:0]

I

Audio mode format. In Multiplex Mode, AM[2:0] indicates the input audio data

format. In Demultiplex Mode, AM[2:0] indicates the output audio data format.

AM[2] is the MSB and AM[0] is the LSB. See Table 2.

99

ACLK

I

Input audio signal clock (128 fs). Synchronous to PCLK.

NOTE: All unused inputs of the GS9023 should be connected to ground.

6

GENNUM CORPORATION

522 - 45 - 05

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