Samsung DVD905 Service Manual page 49

Digital video disc player
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Reference Information
1. A/V decoder VIC1(CL6120P)
VIC1 receives DVD data compressed from DIC6(Digital protection GA) and VCD and CD data compressed
from SIC7(Servo processor) for decoding. VIC8 and VIC9(74HC157, Digital mux.) are used to select one out of
two types of signals and the control signal is DVD_SEL signal inputted from pin 83 of main micom.
DRAM(VIC3, 4, 5, 6, 7 ; KM416C254DJ-6) of 20Mbytes is used for decoding data storage and EPROM(VIC2 :
AM27C4096-120) of 4Mbytes is used to save the decoding program. The signals of PVSREQ, BSTCLK, PLRERR,
PVSACK, etc. indicate a decoding state during DVD refresh and help a smooth decoding for communication
with DIC6.
MAD[8:0]
MADDRH4
VIC2
VIC3
MADDRH1
VIC4
MD[63:0]
VIC5
VIC6
/MRAS[1:0]
VCI7
/MCAS[1:0]
20M RAM
/MWE
4M ROM
/MCE
HADRS[10:8]
/DVD1CS
/RD
MIC1
/WRDVD1
HAD[7:0]
MICOM
WAIT
DVDINT
PVSREQ
BSTCLK
DIC6
PVSERR
Digital
PVSACK
Copy
PVSIN[7:0]
Guard
CD_DATA
CD_LRCK
CD_BCK
SIC7
CD_C2PO
Servo
SDATA
Pro.
VFSY
S0S1
SCLK
2-30
87~104
93
101
2~78,182~208
79,82
83,86
Memory
84
Controller
52
178~181
175
171
173
Host
Interface
157~168
169
170
147
148
151
149
Program
Stream
Decoder
VIC8
129
~
143
VIC9
DVD_SEL
Fig. 2-50 A/V decoder VIC1(LC6120P) signal
VIC1 (LC6120P)
OSD
Decoder
Subpicture
Video
Decoder
Mixer
MPEG
Video
Decoder
SYNC
Generator
AC-3
Decoder
Digital &
IEC-958
Interface
MPEG
Audio
Decoder
VDATA
[7:0]
108~118
VIC31
121
HSYNC
Analog
Copy
119
VSYNC
Guard
106
27MHz
123
124
DA_DATA
128
[2:0]
AIC3
AIC9
125
DA_LRCK
AIC14
126
DA_BCK
KIC3
127
DA_XCK
Audio
DAC
129
IEC958
Samsung Electronics

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