參數(shù)資料
型號(hào): CYM74S551
廠商: Cypress Semiconductor Corp.
英文描述: OPTi Viper Chip Set Level II Cache Module Family(OPTi Viper 芯片組電平II高速緩沖存儲(chǔ)器模塊系列)
中文描述: 奧普蒂蝰蛇芯片組二級(jí)緩存模塊系列(奧普蒂蝰蛇芯片組電平二高速緩沖存儲(chǔ)器模塊系列)
文件頁(yè)數(shù): 4/8頁(yè)
文件大小: 197K
代理商: CYM74S551
CYM74B550
CYM74P550A
CYM74S550, CYM74S551
PRELIMINARY
4
Top View
Pin Configuration
Dual Read-Out SIMM (DIMM)
10
11
12
13
9
5
6
7
8
4
1
2
3
GND
D
63
D
61
V
CC5
D
59
D
57
GND
D
62
D
NC (74B550) / V
CC3
(74P550A, 74S55X)
D
58
D
56
GND
D
52
D
50
D
NC (74B550) / V
CC3
(74P550A, 74S55X)
D
V
CC5
D
47
D
D
GND
D
53
D
51
D
49
91
92
93
90
85
86
87
81
82
84
20
21
22
23
15
16
17
19
14
D
46
D
GND
GND
D
34
D40
D
38
D
D
30
31
32
33
26
27
29
25
D
32
D
30
D
GND
D
26
D
NC (74B550) / V
CC3
(74P550A, 74S55X)
D
D
16
40
41
42
35
36
37
39
34
D
22
D
20
18
GND
D
NC (74B550) / V
CC3
(74P550A, 74S55X)
D
14
D
GND
D
4
52
53
54
55
47
48
49
51
46
43
44
45
D
8
D
D
NC (74B550) / V
(74P550A, 74S55X)
GND
CS
3
(74B550) / WE
3
(74P550A, 74S55X)
CS
(74B550) / WE
5
(74P550A, 74S55X)
NC (74B550) / V
(74P550A, 74S55X)
D
2
58
59
60
61
62
63
57
TAGWE
NC (74B550) / A
4
(74P550A, 74S55X)
A
6
10
A
12
A
NC (74B550) / V
CC3
(74P550A, 74S55X)
A
A
8
A
70
71
72
73
65
66
67
69
64
A
16
PD
3
NC (74B550) / V
CC3
(74P550A, 74S55X)
1
(74B550) / WE
1
(74P550A, 74S55X)
PD
1
80
75
76
77
79
74
CS
GND
D
43
D
41
D
39
D
GND
D
35
D
33
D
31
D
100
101
102
103
95
96
97
99
94
GND
D
27
D
25
V
CC5
GND
D
5
110
111
112
113
106
107
109
105
23
D
21
D
GND
D
17
D
15
D
GND
D
11
V
CC5
9
D
7
121
122
120
115
116
117
114
V
CC5
3
D
1
V
127
128
129
130
131
132
133
126
123
124
125
GND
A
7
A
11
A
13
GND
(74P550A,74S55X)A
3
/ (74B550) A
140
141
142
143
136
137
139
135
15
A
17
GND
A
9
PD
2
V
CC5
(74P550A, 74S55X)CLK / (74B550) NC
(74P550A, 74S55X)WE
0
/ (74B5ECDOE
0
151
152
153
150
145
146
147
144
GND
TAG
6
(74P550A, 74S55X)ADSC / (74B550) ECA
4
(74P550A,74S55X)SYNCS
0
/ (74B550) ECAWE
160
155
156
157
159
154
PD
0
TAG
4
TAG
2
V
0
DIRTYI
GND
(Reserved A
19
) NC
V
CC5
(74P550A, 74S55X)WE
2
/ (74B550) CS
2
(74P550A, 74S55X)WE
4
/ (74B550) CS
4
V
(74P550A, 74S55X)WE
/ (74B550) CS
6
DIRTYWE
5
OCA
(74B550) / ADV(74P550A, 74S55X)
OCAWE(74B550) / SYNCS
1
(74P550A, 74S55X)
CS
7
(74B550) / WE
7
(74P550A, 74S55X)
GND
NC (Reserved A
20
)
GND
DIRTYO
TAG
NC (74B550) / V
CC3
(74P550A, 74S55X)
TAG
3
TAG
5
GND
TAG
7
NC (74B550) / V
CC3
(74P550A, 74S55X)
74b550-4
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