am79c974 Advanced Micro Devices, am79c974 Datasheet - Page 12

• Manufacturer Part Number: am79c974
• Description: Pcnettm-scsi Combination Ethernet And Scsi Controller For Pci Systems
• Manufacturer: Advanced Micro Devices

CONNECTION DIAGRAM
Pin 1 is marked for orientation.
RESERVE = Don’t Connect.
12
AMD
DEVSEL
IDSELA
IDSELB
FRAME
C/BE2
C/BE3
PERR
SERR
TRDY
STOP
AD17
AD16
LOCK
AD19
AD18
AD23
AD22
AD21
AD20
AD26
AD25
AD24
AD27
IRDY
VDDB
VDDB
VDDB
VSSB
VSSB
VSSB
VDD
VSS
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
P R E L I M I N A R Y
Am79C974
PCnet-SCSI
Am79C974
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75
74
73
72
71
70
69
68
67
XTAL2
AVSS2
XTAL1
AVDD3
TXD+
TXP+
TXD-
TXP-
AVDD4
RXD+
RXD-
DVSS
I/O
C/D
MSG
VDD
ACK
VSSBS
REQ
SEL
DVSS
SDP
SD7
VDDBS
SD6
SD5
SD4
VSSBS
SD3
SD2
SD1
SD0
VSSBS
18681A-3