UBI EasyCoder 601 XP – Service Manual Ed. 1
105
Chapter 15 CPU Board
15.8 Schematics,
cont'd.
1-971699-01 CPU Board; Core
KBRES
RESET
RESET
DATAEN
DATAEN
IOCS1
RAS0
RAS1
RAS2
CAS0
CAS1
CAS2
CAS3
IOA1
SINT1
SINT1
GND
PBRST
ACK
BREQ
VCC
INT4
LVDATA
LLS
OEMAD
CT2
CT1
CT0
A2
A3
VCC
GND
VCC
GND
VCC
VCC
VCC
VCC
VCC
VCC
GND
GND
GND
GND
VCC
GND
VCC
GND
ACK
BURST
SYSCLK
A3
A2
EOE
ESTROBE
LVDATA
LVCLK
LPS
LLS
CS1
CS0
CS2
SELIN
INIT
STROBE
CRSTR
BUSY
CWSTR
CROE
AF
PERR
SELECT
CWOE
CACK
ERROR
INT3741
FEEDDOG
SCLO
SDA
SDAO
SINT0
BREQ
RDCEN
RESET
BGNT
WR
RD
ALE
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD16
AD17
AD18
AD19
AD20
AD21
AD22
AD23
AD24
AD25
AD26
AD27
AD28
AD29
AD30
AD31
DWR
DA0
DA1
DA2
DA3
DA4
DA5
DA6
DA7
DA8
DA9
DA10
IOD0
IOD1
IOD2
IOD3
IOD4
IOD5
IOD6
IOD7
IOD8
IOD9
IOD10
IOD11
IOD12
IOD13
IOD14
IOD15
DREQ0
IOCS2
IOCS3
IOBE0
IOBE1
IORD
IOWR
DACK0
IOWAIT
CLKCPU
LVCLK
CLK1
CLK8
CT0
CT1
CT2
GND
VCC
VCC
GND
GND
VCC
GND
GND
GND
VCC
VCC
VCC
VCC
VCC
VCC
GND
GND
GND
CLKCPU
INT5
RDCEN
CPURES
BGNT
SYSCLK
GND
VCC
WR
RD
BURST
AD31
AD30
AD29
AD28
AD27
AD26
AD25
AD24
AD23
AD22
AD21
AD20
AD19
AD18
AD17
AD16
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
SINT0
CPURES
FEEDDOG
LPS
AD16
AD17
AD18
AD19
A16
A17
A18
A19
AD4
AD20
AD5
AD21
A4
A20
A5
A21
AD6
AD22
AD7
AD23
A6
A22
A7
A23
AD8
AD24
AD9
AD25
A8
A24
A9
A25
AD12
AD13
AD14
AD15
A12
A13
A14
A15
AD10
AD26
AD11
AD27
A10
A26
A11
A27
ALE
DIAG1
DIAG0
VCC
VCC
VCC
VCC
CPURES
RESET
SYSCLK
ALE
AD14
AD13
AD12
AD11
AD10
VCC
GND
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
VCC
GND
GND
BURST
A3
A2
ALE
RD
WR
DRDY
BGNT
RESET
ACK
RDCEN
BREQ
INT
TADOE
TADIR
TATOE
TDTACK
TDS
TBREQ
TBGNT
TAS
TCS
TAACK
PIO0
PIO1
PIO2
PIO3
PIO4
PIO5
SELECTIN
INIT
STROBE
CRSTROBE
BUSY
VCC
CLKIN
GND
CWSTROBE
CROE
VCC
AF
PERR
SELECT
CWOE
ACK
ERROR
EOE
ESTROBE
NC
NC
NC
NC
VCC
GND
IOWAIT
DMAACK1
DMAACK0
IOWR
IORD
IOA1
IOBE1
IOBE0
IOGPCS1
IOGPCS0
IOCS1
IOCS0
DMAREQ0
DMAREQ1
IOD15
IOD14
IOD13
IOD12
IOD11
IOD10
IOD9
IOD8
IOD7
IOD6
IOD5
IOD4
VCC
VCC
GND
IOD3
IOD2
IOD1
IOD0
DA10
DA9
DA8
DA7
VCC
GND
DA6
DA5
DA4
DA3
DA2
DA1
DA0
RAS0
RAS1
RAS2
CAS0
CAS1
CAS2
CAS3
DWR
CS2
VCC
GND
CS1
CS0
LLS
LPS
LVCLK
LVDATA
AD31
AD30
AD29
AD28
ROE
GND
AD27
AD26
AD25
AD24
AD23
AD22
VCC
GND
AD21
AD20
AD19
AD18
AD17
AD16
AD15
OEMAD
TEST
CLR
LOAD
ENT
ENP
CLK
A
B
C
D
RCO
QA
QB
QC
QD
GND
XIN
XOUT
OE
S0
S1
S2
XBUF
CPUCLK
CLKA
CLKB
CLKC
CLKD
VCC
VCC
OC
CLK
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
OC
CLK
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
OC
CLK
1D
2D
3D
4D
5D
6D
7D
8D
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
AD23
AD24
AD25
AD26
VCC
GND
AD27
AD28
AD29
AD30
AD31
GND
VCC
CLKIN
Rsvd4
Rsvd3
Rsvd2
Rsvd1
Rsvd0
INT5
GND
VCC
INT4
INT3
SINT2
SINT1
SINT0
SBRC3
SBRC2
BRC1
GND
VCC
BRC0
BREQ
RDCEN
ACK
BUSERR
RESET
BGNT
SYSCLK
GND
VCC
DATAEN
WR
RD
ALE
DIAG0
DIAG1
GND
VCC
A2
A3
BURST
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD8
AD9
AD10
AD11
AD12
AD13
AD14
AD15
AD16
AD17
AD18
AD19
AD20
AD21
AD22
GND
VCC
VCC
GND
GND
VCC
VCC
GND
GND
GND
G
A/B
1A
1B
2A
2B
3A
3B
4A
4B
1Y
2Y
3Y
4Y
VCC
GND
VCC
VCC
A
B
Y
VCC
GND
VCC
VCC
VCC
VCC
PRE
D
CLK
CLR
Q
Q
VCC
GND
GND
PBRST
TD
TOL
ST
RST
RST
VCC
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
135
136
137
138
139
140
141
142
134
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
1
9
10
7
2
3
4
5
6
15
14
13
12
11
4
5
16
12
13
15
6
8
10
9
1
7
1
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1
11
2
3
4
5
6
7
8
9
19
18
17
16
15
14
13
12
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
59
60
61
62
63
64
67
68
69
70
71
72
75
76
77
78
79
80
83
84
81
82
57
58
65
66
73
74
15
1
2
3
5
6
11
10
14
13
4
7
9
12
2
1
9
10
8
1
2
1
2
3
10
12
11
13
9
8
1
2
3
7
6
5
Debug
CTRDIV16
‹
‹
‹
MUX
=1
IDT3710
IC11
IOBUS
CENTRONICS
D[0..31]
A[0..31]
CTRL
DRCTRL
PIO
74HC163
IC14
X10
24MHz
CY2292
IC13
IC18
74HC573
IC16
74HC573
IC17
74HC573
3051
IC10
74HC157
IC12
R12
R13
74HC04
IC804A
74HC86
IC805C
P13
R16
P12
R14
R17
R18
R19
R100
R101
R102
R11
R10
R103
22
22
R104
22
R105
22
R106
22
R107
22
R108
22
R109
74HC74
IC807B
R110
R112
R111
C10
R113
R114
R115
R116
R117
MAX1232
IC15
R15
C11
NetROM
Reset
DBRefill
Tristate