69
XR-VS77, XR-VS55
BU9253FS (DISPLAY ASSY : IC3931)
• 1 Chip Karaoke Echo LSI
•
Pin Function
16
CR
MlX IN
MUTE
VCC
ADINT IN
ADINT OUT
ADLPF OUT
ADLPF IN
GND
MIX OUT
ECHO VR
BIAS
DAINT IN
DAINT OUT
DALPF IN
DALPF OUT
15 14 13 12 11 10 9
1
OSC A/D
SRAMCOUNTER
MIX
D/A
2345678
.oNemaNniPO/InoitcnuF.oNemaNniPO/InoitcnuF
lDNG-niPdnuorG9NIXlMI tupniPMAXIM
2ohcERVOHCEI lortnoclevelohcE01NIFPLDAI tupniFPLedisDA
3SAIB- saibCDtrapgolanA11TUOFPLDAO tuptuoFPLedisDA
4NITNIADI tupnirotargetnledisAD21TUOTNIDAO tuptuorotargetnledisDA
5TUOTNIADO tuptuorotargetnledisAD31NITNIDAI tupnirotargetnledisDA
6NIFPLADI tupniFPLedisAD41CCV-nipCCV
7TUOFPLADO tuptuoFPLedisAD51ETUMIlortnocetuM
8TUOXIMO tuptuoPMAXIM61RC- rotallics0rofniPRC
•
Block Diagram
HostData
Serial Bitstream
CD Subcode Data
Host
lnterface
RISC
CPU
Decompression
Coprocessors
Video
Interface
Video Data
Audio Data
lnternal Bus
DRAM/ROM
lnterface
DRAM and ROM
CD
lnterace
Audio
Interface
CL680T-D1 (VCD ASSY : IC1701)
• MPEG Decoder
•
Block Diagram
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