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AM79C974 Datasheet(PDF) 8 Page - Advanced Micro Devices

Part # AM79C974
Description  PCnetTM-SCSI Combination Ethernet and SCSI Controller for PCI Systems
PDF  153 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C974 Datasheet(HTML) 8 Page - Advanced Micro Devices

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AMD
P R E L I M I N A R Y
8
Am79C974
SCSI Power Management Features
87
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SCSI Activity Pin
87
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reduced Power Mode
87
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Down Pin (PWDN Pin)
88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Disk Spin-Down
88
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NAND Tree Testing
89
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ABSOLUTE MAXIMUM RATINGS
92
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OPERATING RANGES
92
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DC CHARACTERISTICS: PCI Bus and Board Interface
92
. . . . . . . . . . . . . . . . . . . . . . . . . . .
DC CHARACTERISTICS: Attachment Unit Interface
93
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DC CHARACTERISTICS: 10BASE-T Interface
93
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DC CHARACTERISTICS: SCSI Interface
94
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DC CHARACTERISTICS: Capacitance, ESD, and Latch Up
95
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AC SWITCHING CHARACTERISTICS: PCI Bus and Board Interface
96
. . . . . . . . . . . . . . . . .
AC SWITCHING CHARACTERISTICS: 10BASE-T Interface
97
. . . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING CHARACTERISTICS: Attachment Unit Interface
98
. . . . . . . . . . . . . . . . . . .
AC SWITCHING CHARACTERISTICS: SCSI Interface
99
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
KEY TO SWITCHING WAVEFORMS
101
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING TEST CIRCUITS
101
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING WAVEFORMS: System Bus Interface
103
. . . . . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING WAVEFORMS: 10BASE-T Interface
105
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING WAVEFORMS: Attachment Unit Interface
107
. . . . . . . . . . . . . . . . . . . . . . . .
AC SWITCHING WAVEFORMS: SCSI Interface
110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PHYSICAL DIMENSIONS
112
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX A – Register Summary
113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet Controller
Control and Status Registers
114
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BCR —Bus Configuration Registers
117
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SCSI Controller
SCSI Register Map
118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DMA Register Map
118
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX B – PCnet-SCSI Compatible Media Interface Modules
119
. . . . . . . . . . . . . . . . . .
APPENDIX C – Recommendation for Power and Ground Decoupling
121
. . . . . . . . . . . . . . .
APPENDIX D – Alternative Method for Initialization of Ethernet Controller
123
. . . . . . . . . . .
APPENDIX E – SCSI System Considerations
124
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
APPENDIX F – Designing a Single Motherboard for AMD PCI Family
132
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