AM79C976 Advanced Micro Devices, AM79C976 Datasheet - Page 2
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AM79C976
Manufacturer Part Number
AM79C976
Description
PCnet-PRO 10/100 Mbps PCI Ethernet Controller
Manufacturer
Advanced Micro Devices
Datasheet
1.AM79C976.pdf
(309 pages)
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Dual-speed CSMA/CD (10 Mbps and 100 Mbps)
Media Access Controller (MAC) compliant with
IEEE/ANSI 802.3 and Blue Book Ethernet
standards
Programmable internal/external loopback
capabilities
Supports patented External Address Detection
Interface (EADI) with receive frame tagging
support for internetworking applications
EEPROM interface supports jumperless design
and provides through-chip programming
— Supports full programmability of all internal
Programmable PHY reset output pin capable of
resetting external PHY without needing
buffering
Integrated oscillator circuit is controlled by
external crystal
Extensive programmable LED status support
Supports up to 16 Mbyte optional Boot PROM or
Flash for diskless node application
Look-Ahead Packet Processing (LAPP) data
handling technique reduces system overhead
by allowing protocol analysis to begin before
the end of a receive frame
registers through EEPROM mapping
P R E L I M I N A R Y
Am79C976
Optional delayed interrupt feature reduces CPU
overhead
Programmable Inter Packet Gap (IPG) to
address less aggressive network MAC
controllers
Offers the Modified Back-Off algorithm to
address the Ethernet Capture Effect
Optionally sends and receives non-standard
frames of up to 64K octets in length
IEEE 1149.1-compliant JTAG Boundary Scan
test access port interface for board-level
production connectivity test
Provides built-in self test (MBIST) for the
external SSRAM
Software compatible with AMD PCnet Family
and LANCE/C-LANCE register and descriptor
architecture
Compatible with the existing PCnet Family
driver and diagnostic software (except for
statistics)
Available in 208-pin PQFP package
+3.3-V power supply with 5-V tolerant I/Os
enables broad system compatibility
Support for operation in Industrial temperature
range (-40° C to +85 C) available.
8/01/00
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