ARM ARM7TDMI - Privileged Mode Access

Open Access
A-19
ARM Development Board (ARM7TDMI Version)
Hardware Reference Guide
ARM DUI 0017C
Board Schematics
A.18 Memory Address and Data Buffers
Date: February 26, 1996 Sheet
Size Document Number
B EOI-0011B (MEMBUF.
S
Title
Address and Data Buf
CB1 4JN
CAMBRIDGE
CHERRY HINTON
FULBOURN ROAD
(C) ADVANCED RISC MAC
M_D[31..
0
M_A[17..2]
M_D[31..0]
M_A[17..2]
ADDRESS REGISTER
1OE
1
1O0
2
1O1
3
GND
4
1O2
5
1O3
6
VCC
7
1O4
8
1O5
9
GND
10
1O6
11
1O7
12
2O0
13
2O1
14
GND
15
2O2
16
2O3
17
VCC
18
2O4
19
2O5
20
GND
21
2O6
22
2O7
23
2OE
24
2CLK
25
2D7
26
2D6
27
GND
28
2D5
29
2D4
30
VCC
31
2D3
32
2D2
33
GND
34
2D1
35
2D0
36
1D7
37
1D6
38
GND
39
1D5
40
1D4
41
VCC
42
1D3
43
1D2
44
GND
45
1D1
46
1D0
47
1CLK
48
U34
FCT16374
GND
M_A2
M_A3
B_A2
B_A3
nB_CLK6
DATA BUFFERS
1OEAB
1
1LEAB
2
1CEAB
3
GND
4
1A0
5
1A1
6
VCC
7
1A2
8
1A3
9
1A4
10
GND
11
1A5
12
1A6
13
1A7
14
2A0
15
2A1
16
2A2
17
GND
18
2A3
19
2A4
20
2A5
21
VCC
22
2A6
23
2A7
24
GND
25
2CEAB
26
2LEAB
27
2OEAB
28
2OEBA
29
2LEBA
30
2CEBA
31
GND
32
2B7
33
2B6
34
VCC
35
2B5
36
2B4
37
2B3
38
GND
39
2B2
40
2B1
41
2B0
42
1B7
43
1B6
44
1B5
45
GND
46
1B4
47
1B3
48
1B2
49
VCC
50
1B1
51
1B0
52
GND
53
1CEBA
54
1LEBA
55
1OEBA
56
U35
FCT16543
GND
GNDGND
GND
nOEMD nOEBD
B_A[17..2]
B_D[31..0]
nOEMD
nOEBD
nB_CLK6
B_A[17..2]
B_D[31..0]
nOEMD
nOEBD
nB_CLK6
M_D0
M_D1
M_D2
M_D3
M_D4
M_D5
M_D6
M_D7
M_D8
M_D9
M_D10
M_D11
M_D12
M_D13
M_D14
M_D15
B_D0
B_D1
B_D2
B_D3
B_D4
B_D5
B_D6
B_D7
B_D8
B_D9
B_D10
B_D11
B_D12
B_D13
B_D14
B_D15
GND
GND
GND
GND
GND GND
GNDGND
GND
GND
GND
GND
VCC
VCC
VCC
VCC
GND
VCC
GND
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC
M_A4
M_A5
M_A6
M_A7
M_A8
M_A9
M_A10
M_A11
M_A12
M_A13
M_A14
M_A15
B_A4
B_A5
B_A6
B_A7
B_A8
B_A9
B_A10
B_A11
B_A12
B_A13
B_A14
B_A15
M_A16
M_A17
B_A16
B_A17
nB_CLK6
1OEAB
1
1LEAB
2
1CEAB
3
GND
4
1A0
5
1A1
6
VCC
7
1A2
8
1A3
9
1A4
10
GND
11
1A5
12
1A6
13
1A7
14
2A0
15
2A1
16
2A2
17
GND
18
2A3
19
2A4
20
2A5
21
VCC
22
2A6
23
2A7
24
GND
25
2CEAB
26
2LEAB
27
2OEAB
28
2OEBA
29
2LEBA
30
2CEBA
31
GND
32
2B7
33
2B6
34
VCC
35
2B5
36
2B4
37
2B3
38
GND
39
2B2
40
2B1
41
2B0
42
1B7
43
1B6
44
1B5
45
GND
46
1B4
47
1B3
48
1B2
49
VCC
50
1B1
51
1B0
52
GND
53
1CEBA
54
1LEBA
55
1OEBA
56
U36
FCT16543
nOEMD nOEBD
GND
GND
GND
GND
GNDGND
GND
GND
GND
GND
VCC VCC
nOEMD nOEBD
B_D16
B_D17
B_D18
B_D19
B_D20
B_D21
B_D22
B_D23
B_D24
B_D25
B_D26
M_D16
M_D17
M_D18
M_D19
M_D20
M_D21
M_D22
M_D23
M_D24
M_D25
M_D26
C118
100n
C119
100n
C120
100n
C121
100n
C122
100n
C123
100n
VCC
GND
GND
GND GND
GNDGND
GND
VCC VCC
nOEMD nOEBD
B_D27
B_D28
B_D29
B_D30
B_D31
M_D27
M_D28
M_D29
M_D30
M_D31
VCC
GND
h
rg.
b
oo
k
P
age
19
W
e
d
nes
d
ay,
J
u
l
y
22
,
1998
9
:
18
AM