Am79C930

`Capable of supporting the IEEE 802.11 standard (draft)
` Supports the Xircom Netwave™ media access control (MAC) protocols
`Supports MAC layer functions
` Individual 8-byte transmit and 15-byte receive FIFOs
` Integrated intelligent 80188 processor for MAC layer functions
` Glueless PCMCIA bus interface conforming to PC Card standard-Feb. 1995
` Full PCMCIA software interface support for PC Card standard-Feb. 1995
`Glueless ISA (IEEE P996) bus interface with full support for Plug and Play release 1.0a
`Glueless SRAM interface for MAC operations, supporting up to 128 Kbytes of memory
`Antenna diversity selection support
`Fabricated with submicron CMOS technology with low operating current
`Supports dual 3 V and 5 V supply applications
`Low-power mode allows reduced power consumption for critical battery-powered applications
`144-pin Thin Quad Flat Pack (TQFP) package available for space-critical applications, such as PCMCIA
`JTAG Boundary Scan (IEEE 1149.1) test access port for board-level production test

PCnet-Mobile (Am79C930) is the first in a series of mobile 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 protocols 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 atransceiver attachment interface (TAI). The TAI supports 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 powersensitive applications.

The Am79C930 device provides users with a media access 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.