Marantz CC-4001, Service Manual

Page: 26 / 47

34
Timer 2 Timer 1 Timer 0
Stack
Pointer
Decoder &
Register
128/256
bytes RAM
Reset
Circuit
Power
Circuit
Interrupt
Circuit
Timing
Generator
XTAL2
XTAL1
#EA
ALE
#PSEN
RES
Vdd
Vss
to pertinent blocks
to whole chip
to pertinent blocks
to whole system
Acc
Buffer2 Buffer1
ALU
PSW
Buffer
DPTR
PC
Incrementer
Program
Counter
Register
4/8 K
bytes
Flash
Memory
Port 0
Latch
Port 1
Latch
Port 2
Latch
Port 3
Latch
Port 0
Driver & Mux
Port 1
Driver & Mux
Port 2
Driver & Mux
Port 3
Driver & Mux
8
8
8
8
WDT
Instruction
Register
417-HDJ2450-693C
SM8951/SM8952A
IC103 :
IC104 :
R
2
20 19
R IN R OUT
2
R
1
3 4
R IN R OUT
1
T
2
1 18
T IN
2
T OUT
2
T
1
2 5
T IN
1
T OUT
1
9
GND
400k
Ω
400k
Ω
TTL/CMOS INPUTS RS-232 OUTPUTS
13
8
C +
C -
V-
V-
V+
1
1
10
7
V
CC
+5V INPUT
11
TTL/CMOS OUTPUTS
RS-232 INPUTS
2
1
5k
Ω
5k
Ω
17
12
C +
C +
C -
C -
2
2
GND
6
14
15
16
2
2
Do not make
connection to
these pins
Internal
-10V Power
Supply
Internal
+10V Power
Supply
SP233A
417-
MP3
-
43
0
S
P
232ACP