AM79C930 Datasheet, PDF (1/161 Pages) Advanced Micro Devices – PCnet-Mobile Single-Chip Wireless LAN Media Access Controller

PRELIMINARY
Am79C930
PCnet™-Mobile
Single-Chip Wireless LAN Media Access Controller
DISTINCTIVE CHARACTERISTICS
s Capable of supporting the IEEE 802.11 standard
(draft)
s Supports the Xircom Netwave™ media access
control (MAC) protocols
s Supports MAC layer functions
s Individual 8-byte transmit and 15-byte receive
FIFOs
s Integrated intelligent 80188 processor for MAC
layer functions
s Glueless PCMCIA bus interface conforming to
PC Card standard—Feb. 1995
s Full PCMCIA software interface support for PC
Card standard—Feb. 1995
s Glueless ISA (IEEE P996) bus interface with full
support for Plug and Play release 1.0a
s Glueless SRAM interface for MAC operations,
supporting up to 128 Kbytes of memory
s Glueless Flash memory interface, supporting
up to 128 Kbytes of non-volatile memory for
MAC control code, PCMCIA configuration
parameters, and ISA Plug and Play
configuration parameters
s Provides integrated Transceiver Attachment
Interface (TAI), supporting Frequency-Hopping
Spread Spectrum, Direct Sequence Spread
Spectrum, and infrared physical-layer
interfaces
s Antenna diversity selection support
s Fabricated with submicron CMOS technology
with low operating current
s Supports dual 3 V and 5 V supply applications
s Low-power mode allows reduced power
consumption for critical battery-powered
applications
s 144-pin Thin Quad Flat Pack (TQFP) package
available for space-critical applications, such as
PCMCIA
s JTAG Boundary Scan (IEEE 1149.1) test access
port for board-level production test
GENERAL DESCRIPTION
PCnet-Mobile (Am79C930) is the first in a series of mo-
bile networking products in AMD’s PCnet family. The
Am79C930 device is the first single-chip wireless LAN
media access controller (MAC) supporting the IEEE
802.11 (draft) standard and the Xircom Netwave™
MAC protocols. The Am79C930 device is designed to
have a flexible protocol engine to allow for industry
standard and proprietary protocols. Protocol firmware
for Xircom Netwave and IEEE 802.11 (draft) MAC pro-
tocols are supplied by AMD. It is pin-compatible with
the PCMCIA bus or the ISA (Plug and Play) bus
through a pin-strapping option.
The Am79C930 device contains a PCMCIA/ISA bus
interface unit (BIU), a MAC control unit, and a
transceiver attachment interface (TAI). The TAI sup-
ports frequency-hopping spread spectrum, direct
sequence spread spectrum, and infrared physical layer
interfaces. In addition, a power down function has been
incorporated to provide low standby current for power-
sensitive applications.
The Am79C930 device provides users with a media ac-
cess controller that has flexibility (i.e., bus interface,
protocol, and physical layer support) to allow the
design of multiple products using a single device. By
having all the necessary MAC functions on a single
chip, users only need to add memory and the physical
layer in order to deliver a fully functional wireless LAN
connection.
Publication# 20183 Rev: B Amendment/0
Issue Date: April 1997
This document contains information on a product under development at Advanced Micro Devices. The
information is intended to help you evaluate this product. AMD reserves the right to change or discontinue
1
work on this proposed product without notice.