ARM ARM7TDMI - APB Buffers; A.17 APB Buffers

Open Access
A-18
ARM Development Board (ARM7TDMI Version)
Hardware Reference Guide
ARM DUI 0017C
Board Schematics
A.17 APB Buffers
Date: February 26, 1996 Sheet
Size Document Number
B EOI-0011B (APBBUF.
S
Title
APB Buffers
CB1 4JN
CAMBRIDGE
CHERRY HINTON
FULBOURN ROAD
(C) ADVANCED RISC MAC
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
U32
FCT16543
R173
10K
GND
GND
nP_ALEN
GND
GND
B_A0
B_A1 P_A1
P_A0
VCC
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
U30
FCT16543
P_D[31..0]
P_A[31..26]
P_A[22..9]
P_A[1..0]
nB_DEN
nP_DLEN
GND
GND
P_D0
P_D1
nB_DEN
nB_DLEN
nP_DEN
nP_DLEN
B_D[31..0]
B_A[31..0]
nP_ALEN
B_D0
B_D1
GND
GND
nP_DEN
nB_DLEN
nB_DEN
nB_DLEN
nP_DEN
nP_DLEN
B_D[31..0]
B_A[31..0]
P_D[31..0]
nP_ALEN
P_A[31..26]
P_A[22..9]
P_A[1..0]
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
VCC
GND
GND
VCC
GND
GND
nB_DLEN
nP_DEN
VCC
GND
VCC
GND
GND
GND
nB_DEN
nP_DLEN
P_D2
P_D3
P_D4
P_D5
P_D6
P_D7
P_D8
P_D9
P_D10
P_D11
P_D12
P_D13
P_D14
P_D15
R174
10K
1
V137
1
V138
1
V139
1
V140
1
V141
1
V142
1
V143
VCC
GND
GND
VCC
GND
GND
VCC
GND
VCC
GND
GND
nP_ALEN
GND
B_A2
B_A3
B_A4
B_A5
B_A6
B_A7
B_A8
B_A9
B_A10
B_A11
B_A12
B_A13
B_A14
B_A15
P_A10
P_A11
P_A12
P_A13
P_A14
P_A15
P_A9
VCC
GENERATED IN APB BRIDGE
P_A 25..23, 8..2 ARE ALL
GENERATED IN APB BRIDGE
P_A 25..23, 8..2 ARE ALL
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
U33
FCT16543
R175
10K
1
V144
1
V145
1
V146
GND
VCC
GND
GND
GND
nP_ALEN
GND
VCC
GND
GND
GND
B_A16
B_A17
B_A18
B_A19
B_A20
B_A21
B_A22
B_A23
B_A24
B_A25
B_A26
B_A27
B_A28
P_A16
P_A17
P_A18
P_A19
P_A20
P_A21
P_A22
P_A26
P_A27
P_A28
VCC
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
U31
FCT16543
nB_DEN
nP_DLEN
GND
GND
VCC
GND
GND
P_D16
P_D17
P_D18
P_D19
P_D20
P_D21
P_D22
P_D23
P_D24
P_D25
P_D26
P_D27
P_D28
GND
VCC
GND
GND
GND
nP_DEN
nB_DLEN
B_D16
B_D17
B_D18
B_D19
B_D20
B_D21
B_D22
B_D23
B_D24
B_D25
B_D26
B_D27
B_D28
C110
100n
C111
100n
C114
100n
C115
100n
C116
100n
C117
100n
VCC
GND
GND
nB_DLEN
nP_DEN
B_D29
B_D30
B_D31
C112
100n
C113
100n
VCC
GND
GND
nB_DEN
nP_DLEN
P_D29
P_D30
P_D31
VCC
GND
VCC
GND
R176
10K
VCC
GND
GND
VCC
GND
nP_ALEN
GND
B_A29
B_A30
B_A31
P_A29
P_A30
P_A31
VCC
h
rg.
b
oo
k
P
age
18
W
e
d
nes
d
ay,
J
u
l
y
22
,
1998
9
:
18
AM