Daewoo DSD-9251MA, Service Manual

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23
CIRCUIT OPERATING MANUAL
Chart 81. SCART PINSPEC.
(2) Audio
1) PCM Audio
Audio related output of the Sti5518 is made in the form of PCM format and AC3 Interface format.
DSD-9251MA uses the serial data of PCM format. PCM Data output format is in Standard format and I2S
Compatible PCM format.
Followings are the interface signals of PCM format.
PCMDATA (Sti5518 Pin44) : PCM Serial Data Output
SCLK (Sti5518 Pin43) : PCM Clock Output
LRCLK (Sti5518 Pin46) : Left/Right Channel select
PCMCLK (Sti5518 Pin45) : PCM Clock Input(18.432Mhz)
Data of PCM format is modified to Analogue signals at the external Audio DAC. The output information is sent to
external output port through Output magnifying equipment and AV Switch.
DSD-9251MA can use two Audio DAC systems. (CS4331/Crystal, UDA1330/Philips)
Following diagram shows Timing Diagram with Audio DAC and Philips UDA1330 Block.
Pin Name Description Signal Level Impedance
1 AOR Audio Out Right 0.5 V rms <1k ohm
2 AIR Audio In Right 0.5 V rms >10k ohm
3 AOL Audio Out Left + Mono 0.5 V rms <1k ohm
4 AGND Audio Ground
5 B GND RGB Blue Ground
6 AIL Audio In Left + Mono 0.5 V rms >10k ohm
7 B RGB Blue In 0.7 V 75 ohm
8 SWTCH TV/AV(4:3, 16:9) Mode Select
9 G GND RGB Green Ground
10 CLKOUT
Data 2: Clock pulse Out
(Unavailable ??)
11 G RGB Green In 0.7 V 75 ohm
12 DATA Data 1: Data Out (Unavailable ??)
13 R GND RGB Red Ground
14 DATAGND Data Ground
15 R RGB Red In / Chrominance 0.7 V (Chrom.: 0.3 V burst) 75 ohm
16 BLNK Blanking Signal 1-3 V=RGB, 0-0.4 V=Composite 75 ohm
17 VGND Composite Video Ground
18 BLNKGND Blanking Signal Ground
19 VOUT Composite Video Out 1 V 75 ohm
20 VIN Composite Video In / Luminance 1 V 75 ohm
21 SHIELD Ground/Shield (Chassis)