Sony MDX-C8900 Service Manual page 53

IC502 MSM6654A-519GS-KR1
VDD 1
XT 2
XT 3
TIMMING
NC 4 OSC
CONTROLLER
CMD 5
NC 6
I/O
NC 7
INTERFACE
ST 8
17 BIT
ADDRESS
COUNTER
17 BIT
MULTIPLEXER
7
9
10
ADDRESS
10
11
&
COMMAND
12/PoRT0 11
CONTROLLER
13/PoRT1
12
IC506 BA3918-V3
REGULATOR
OVER VOLTAGE
PROTECT
–
+
1 2 3 4 5 6
– AUDIO Board –
IC801,802 TA2050F (EL)
OUT1 1
2
VREF
NC 3
GND 4
5
NC
VCC 6
NC 7
OUT2 8
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
7 8 9 10
16 NC
IN(–)1
15
NC
14
13 IN(+)1
12 IN(+)2
11
NC
10 IN(–)2
9 NC
IC504 BA8270F-E2
24
GND
BUS ON
23 AOUT
22 NAR
21 NC
RST
20
BUSY
19
NC
BATT
18 NC
17
RESET
4
CLK
VREF
DATA
GND
16
CH
15
16/SD
14 15/SI
13 14
11 12
– 73 –
BUS ON
14 VCC
1
SWITCH
RESET
2 13 RST
SWITCH
12 BUS ON
11 CLK IN
BATTERY
3 10 BU IN
SWITCH
5
6 9 DATA IN
7 8 DATA OUT