Pioneer VSW-1 Service Manual page 41

5
PEG098A8 (JACK ASSY : IC101)
• System Control Microcomputer
Blockdiagram
RESO /FWE
ADTRG /CS /IRQ /P8
CS /IRQ /P8
CS /IRQ /P8
Pin layout
25 24 23 22 21 20 19 18 17 16 15 14 13 12 11
26
27
28
29
30
31
LEDAT
32
33 XLEDB
PEG098A8
XLEDA
34
35
VCC
HD64F3062BFBL25
36 XPALSW
AUTOSW
37
B-SW
38
39 A-SW
B-FS1IN
40
B-FS2IN
41
A-FS1IN
42
A-FS2IN
43
44 VSS
N
45
XOE
46
SDLYA0
47
SDLYA1
48
SDLYA2
49
SDLYB0
50
51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69
5
6
MD
2
MD
1
MD
0
EXTAL
XTAL
STBY
RES
NMI
φ /P6
Interrupt controller
7
LWR/P6
6
HWR/P6
5
RD/P6
4
AS/P6
3
BACK/P6
2
BREQ/P6
1
WAIT/P6
0
CS /P8
0
4
1 3 3
2 2 2
16-bit timer unit
3 1 1
IRQ /P8
0 0
8-bit timer unit
Programmable
timing pattern
controller (TPC)
Port B
10 9 8 7 6 5 4 3 2 1
100
99
98
97
96
95
94
VSYNC
93
VSS
92
91
90
PAL/XNT
89
88
87
AVSS
86
N
85
DA0
84
AIN5
83
AIN4
82
AIN3
77:Vref
81
AIN2
76:AVCC
80
AIN1
79
AIN0
78
77
76
70 71 72 73 74 75
6
7
Port 3
Address bus
Data bus (upper)
Data bus (lower)
H8/300H CPU
ROM
(mask ROM or
flash memory)
Watchdog timer
(WDT)
RAM
Serial
communication
interface
(SCI )× 2channels
A/D converter
D/A converter
Port A
VSW-1
7
8
Port 4
P5 /A
3 19
P5 /A
2 18
P5 /A
1 17
P5 /A
0 16
P2 /A
7 15
P2 /A
6 14
P2 /A
5 13
P2 /A
4 12
P2 /A
3 11
P2 /A
2 10
P2 /A
1 9
P2 /A
0 8
P1 /A
7 7
P1 /A
6 6
P1 /A
5 5
P1 /A
4 4
P1 /A
3 3
P1 /A
2 2
P1 /A
1 1
P1 /A
0 0
P9 /SCK/IRQ
51
5
P9 /SCK / IRQ
4 0 4
P9 /RxD
3 1
P9 /RxD
0
2
P9 /TxD
1 1
P9 /TxD
0
0
Port 7
8
A
B
C
D
E
F
41