LSI53C875 LSI Logic, LSI53C875 Datasheet - Page 95

• Manufacturer Part Number: LSI53C875
• Description: PCI to Ultra SCSI I/O Processor
• Manufacturer: LSI Logic

Figure 4.2
DEVSEL/
FRAME/
C_BE3/
C_BE2/
C_BE1/
C_BE0/
PERR/
IDSEL
TRDY/
STOP/
AD23
AD22
AD21
AD20
AD19
AD18
AD17
AD16
IRDY/
AD15
AD14
AD13
AD12
AD11
AD10
V
V
V
PAR/
AD9
AD8
AD7
V
V
V
V
V
V
V
V
DD-I
DD-I
DD-I
SS
SS
SS
SS
SS
SS
SS
SS
Note: The decoupling capacitor arrangement shown above is recommended to maximize
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
the benefits of the internal split ground system. Capacitor values between 0.01 and
0.1 F should provide adequate noise isolation. Because of the number of high
current drivers on the LSI53C875, a multilayer PC board with power and ground
planes is required.
LSI53C875J Pin Diagram
PCI to SCSI I/O Processor
LSI53C875J (JTAG)
Quad Flat Pack
(Top View)
160-Pin
120
119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
104
103
102
101
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
SDIR7
SDIRP0
V
SD12/
SD13/
SD14/
V
SD15/
SDP1/
SD0/
SD1/
V
SD2/
SD3/
SD4/
SD5/
V
SD6/
SD7/
SDP0/
SATN/
V
SBSY/
SACK/
SRST/
SMSG/
SSEL/
V
SC_D/
SREQ/
SI_O/
SD8/
V
SD9/
SD10/
SD11/
V
SDIR8
SDIR9
SDIR10
DD
SS-S
SS-S
SS-S
SS-S
SS-S
SS-S
DD
4-3