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AM79C940 Datasheet(PDF) 6 Page - Advanced Micro Devices

No. de pieza AM79C940
Descripción Electrónicos  Media Access Controller for Ethernet (MACE??
Download  144 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

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Am79C940
Receive Status Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
Receive Exception Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
LOOPBACK OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
USER ACCESSIBLE REGISTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
8-Bit Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
Programmer’s Register Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76
Missing Table Title? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
SYSTEM APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
Host System Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80
NETWORK INTERFACES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
External Address Detection Interface (EADI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
MACE Compatible AUI Isolation Transformers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .88
MANUFACTURER CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89
ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
OPERATING RANGES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Commercial (C) Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
Industrial (I) Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
VCC Supply Voltages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90
DC CHARACTERISTICS (UNLESS OTHERWISE NOTED, PARAMETRIC VALUES ARE THE SAME
BETWEEN COMMERCIAL DEVICES AND INDUSTRIAL DEVICES.) . . . . . . . . . . . . . . . . . . . . . . .90
AC CHARACTERISTICS (UNLESS OTHERWISE NOTED, PARAMETRIC VALUES ARE THE SAME
BETWEEN COMMERCIAL DEVICES AND INDUSTRIAL DEVICES.) . . . . . . . . . . . . . . . . . . . . . . .93
KEY TO SWITCHING WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .97
SWITCHING TEST CIRCUITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .98
PHYSICAL DIMENSIONS* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
PL 084 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
84-Pin Plastic Leaded Chip Carrier (measured in inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
PHYSICAL DIMENSIONS* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
PQR100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
100-Pin Plastic Quad Flat Pack; Trimmed and Formed (measured in millimeters) . . . . . . . . . . . 118
PHYSICAL DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
PQR100 100-Pin Plastic Quad Flat Pack with Molded Carrier Ring (measured in millimeters) . 119
PHYSICAL DIMENSIONS* PQT080 80-Pin Thin Quad Flat Package (measured in millimeters)120
LOGICAL ADDRESS FILTERING FOR ETHERNET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .121
BSDL DESCRIPTION OF AM79C940 MACE JTAG STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . .123
AM79C940 MACE REV C0 SILICON ERRATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141


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