GS1503 datasheet(11/83 Pages) GENNUM

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AOUT7/8

Audio signal output for channels 7 and 8. The AES/EBU digital audio output is bi-phase

mark encoded. In both non-AES/EBU modes, the output is not bi-phase mark encoded.

DEC_MODE

Demultiplex Mode select. Valid in Demultiplex Mode only. When set HIGH, the GS1503

requires a 48kHz word clock input at WCINA and WCINB. This word clock must be

synchronous to the word clock used to embed the audio data. The embedded audio

clock phase information in the ancillary data packet will be ignored. See Section 2-11.

VCLK

Video clock signal input.

81, 82, 83,

89, 94, 93,

92, 91, 90

CPUADR[8:0]

Host Interface address bus. CPUADR[8] is the MSB and CPUADR[0] is the LSB.

In Host Interface Mode B (CPU_SEL set LOW), CPUADR[1:0] are used as the Host

Interface control bus. See Table 1.

103, 102,

101, 100,

99, 98, 96,

CPUDAT[7:0]

I/O

Host Interface data bus. CPUDAT[7] is the MSB and CPUDAT[0] is the LSB.

In Host Interface Mode B (CPU_SEL set LOW), CPUDAT[7:0] are used as the Host

Interface address and data bus.

105

CPUCS

Chip select for Host Interface. Active LOW.

106

CPURE

Read enable for Host Interface. Active LOW. In Host Interface Mode B (CPU_SEL set

LOW), this input is not used.

107

CPUWE

Write enable for Host Interface. Active LOW. In Host Interface Mode B (CPU_SEL set

LOW), this input is used as the Host Interface control enable.

110, 111,

112, 114,

115, 116,

118, 119,

120, 122,

123, 124,

126, 127,

128, 130,

131, 132,

134, 135

VIN[19:0]

Parallel digital video signal input. VIN[19] is the MSB and VIN[0] is the LSB.

136

CPU_SEL

Host Interface mode select. When set HIGH, the GS1503 is configured for Host Interface

Mode A. When set LOW, the GS1503 is configured for Host Interface Mode B.

137, 138

AM[1:0]

Audio format select. In Multiplex Mode, AM[1:0] indicates the input audio data format.

In Demultiplex Mode, AM[1:0] indicates the output audio data format. AM[1] is the MSB

and AM[0] is the LSB. See Tables 3 and 11.

139, 140,

141, 142

VM[3:0]

Video standard select. VM[3] is the MSB and VM[0] is the LSB. See Table 2 or 10.

143

RESET

Device reset. Active LOW.

PIN DESCRIPTIONS (Continued)

NUMBER

SYMBOL

TYPE

DESCRIPTION

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