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