Welcome to Practical Components - Standard ICs

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PC008 Test Board
BGA Daisy-Chain Patterns for the PC008 Test Board
BGA 169 Daisy Chain
T+3
T-3
T+1
T-1
T-2
T+2 T+4
T-4
T+3
T-3
T+1
T-1
T-2
T+2 T+4
T-4
T-4 T+4 T+2 T-2 T-1 T+1 T-3 T+3
A B C D E F G H J K L M
N
A B C D E F G H J K L M
N
N
M
L
K
J
H
G
F
E
D
C
B
A
13
13
13
12
12
12
11
11
11
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10
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9
9
9
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8
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6
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5
5
4
4
4
3
3
3
2
2
2
1
1
1
Ball View
After Mounting to Test Board
X-Ray View
BGA 225 Daisy Chain
T+3
T-3
T+1
T-1
T+2 T-2
T+4
T-4
T+3
T-3
T+1
T-1
T+2 T-2
T+4
T-4
T-4 T+4 T-2 T+2 T-1 T+1 T-3 T+3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
15 14 13 12 11 10
9
8
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5
4
3
2
1
A
B
B
B
C
C
C
D
D
D
E
E
E
F
F
F
G
H
J
K
L
M
N
P
R
G
H
J
K
L
M
N
P
R
G
H
J
K
L
M
N
P
R
Ball View
After Mounting to Test Board
X-Ray View
BGA 352 Daisy Chain
T+1 T-1 T-2 T+2 T-3 T+3
T+4
T-4
T+1 T-1 T-2 T+2 T-3 T+3 T+4 T-4
T-4 T+4 T+3 T-3 T+2 T-2 T-1 T+1
AF
AE
AD
AC
AB
AA
Y
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V
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T
R
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N
M
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K
J
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 10 1112 1314 15 16 17 18 19 20 2122
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AF
AE
AD
AC
AB
AA
Y
W
V
U
T
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
1 2 3 4 5 6 7 8 9 10 1112 1314 15 16 17 18 19 20 21 22 23 24 25 26
2625 2423 22 21 20 19 18 17 16 15 1413 12 11 10 9 8 7 6 5 4 3 2 1
AF
AE
AD
AC
AB
AA
Y
W
V
U
T
R
P
N
M
L
K
J
H
G
F
E
D
C
B
A
Ball View
After Mounting to Test Board
X-Ray View
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