Ic Block Diagram - NAD C 730 Service Manual

IC BLOCK DIAGRAM

U201: LC866448B
P10/SO0
P11/SI0/SB0
P12/SCK0
P13/SO1
P14/SI1/SB1
P15/SCK1
P16/BUZ
P00 65
P01 66
P02 67
P03 68
P04 69
P05 70
P06 71
P07 72
VSS2 73
74
75
76
77
78
79
80
Interrupt Control
Stand-by Control
CF
RC
X'tal
BASE TIMER
SIO0
SIO1
Timer 0
Timer 1
ADC
INT0-3
Noise Filter
Real Time
Service
RAM 128bytes
VFD Controller
High Voltage
Output
EPROM
Control
EPROM(48KB)
Bus Interface
Port 1
Port 3
Port 7
Port 8
Watch Dog Timer
20
40 S15/T15
39 S14/T14
38 S13/T13
37 S12/T12
36 S11/T11
35 S10/T10
34 S9/T9
33 S8/T8
32 S7/T7
31 S6/T6
30 S5/T5
29 S4/T4
28 S3/T4
27 S2/T2
26 S1/T1
25 S0/T1
IR PLA
A15-A0
D7-D0
TA
CE
OE
DASEC
PC
ACC
B Register
C Register
ALU
PSW
RAR
RAM
Stack Pointer
Port 0