Intel Pentium 4 Processor 478-Pin Socket (mPGA478) Design Guidelines

Intel® Pentium® 4 Processor 478-Pin Socket (mPGA478)
R
23
Chain
No.
Socket Positions Daisy
Chained
# of
pins/chain
DC Endpoints
at Socket
Edge Finger:
Hi
Edge Finger: Low
Hi Low +I +V -I -V
23
AD14-AD15, AD16-AD17,
AD18-AD19, AD20-AD21,
AD22-AD23, AD24-AD25
14 AD13 AD26 A31 A32 A57 A58
24
AE14-AE15, AE16-AE17, AE18-
AE19, AE20-AE21, AE22-AE23,
AE24-AE25
14 AE13 AE26 A29 A30 A55 A56
25
AF13-AF14, AF15-AF16, AF17-
AF18, AF19-AF20, AF21-AF22,
AF23-AF24
12 AF13 AF26 A27 A28 A53 A54
26
A3-A4, A5-A6, A7-A8, A9-A10,
A11-A12
12 A13 A2 A125 A126 A149 A150
27
B2-B3, B4-B5, B6-B7, B8-B9,
B10-B11, B12-B13
12 B13 B1 A123 A124 A147 A148
28
C2-C3, C4-C5, C6-C7, C8-C9,
C10-C11, C12-C13
12 C13 C1 A121 A122 A145 A146
29
D2-D3, D4-D5, D6-D7, D8-D9,
D10-D11, D12-D13
12 D13 D1 A119 A120 A143 A144
30
E2-E3, E4-E5, E6-E7, E8-E9,
E10-E11, E12-E13
12 E13 E1 A117 A118 A141 A142
31
F2-F3, F4-F5, F6-F7, F8-F9,
F10-F11, F12-F13
12 F13 F1 A115 A116 A139 A140
32 NOT USED A114 A138
A113 A137
33 NOT USED A112 A136
A111 A135
34 NOT USED A110 A134
A109 A133
35 NOT USED A108 A132
A107 A131
36 NOT USED A106 A130
A105 A129
37 NOT USED A104 A128
A103 A127
38 NOT USED A52 A2
A51 A1
1
39
H6-J6, K6-L6, N6-P6, R6-T6,
U6-V6
12 G6 W6 A50 A26
1
40
H5-J5, K5-L5, M5-N5, P5-R5,
T5-U5, V5-W5
14 G5 Y5 A48 A24
1
41
H4-J4, K4-L4, M4-N4, P4-R4,
T4-U4, V4-W4
14 G4 Y4 A46 A22