Sony XR-C8220 Service Manual page 35

IC502 BA3918-V3
REGULATOR
OVER VOLTAGE
PROTECT
–
+
1 2 3 4 5 6
IC650 MSM6656A-687GS-KR1 (US model)
IC650 MSM6656A-689GS-KR1 (E model)
VDD 1
XT 2
XT 3
TIMMING
NC 4 OSC
CONTROLLER
5
CMD
NC
6
I/O
NC 7
INTERFACE
ST 8
17 BIT
ADDRESS
COUNTER
17 BIT
MULTIPLEXER
7
9
10
ADDRESS
11 10
&
COMMAND
12/PoRT0 11
CONTROLLER
13/PoRT1 12
7 8 9 10
BEEP TONE
LPF
GENARATOR
MELODY 12 BIT
GENARATOR DAC
12
PCM
SYNTHSIZER
DATA ADPCM
CONTROLLER SYNTHESIZER
1M BIT ROM
8
EDITING ROM &
ADDRESS ROM
CONTAINS 22KBIT
IC602 BA8270F-E2
BUS ON
RST
BATT
CLK
VREF
DATA
GND
11 12
24
GND
23
AOUT
22 NAR
21
NC
20 BUSY
19
NC
18 NC
17 RESET
16 CH
15 16/SD
15/SI
14
13 14
– 49 –
BUS ON
14 VCC
1
SWITCH
RESET
2 13 RST
SWITCH
12 BUS ON
CLK IN
11
BATTERY
3 10 BU IN
SWITCH
4
5
6 9 DATA IN
7 8 DATA OUT