DESCRIPTION

The MSM7712 is the first release in a series of wireless LAN baseband controllers, designated .XI (a suffix of the IEEE P802.11 protocol). The MSM7712 integrates the baseband physical layer and the lower MAC layers into a single IC that supports specific draft standards of the P802.11 specification. The architecture targets optimum integration with maximum user flexibility, providing a migration path to low-cost module handsets and access points. In accordance with all three P802.11 media, the MSM7712 directly supports frequency hopping (FH), spread spectrum, direct-sequence spread spectrum, and infrared protocols., A board-level system contains the MSM7712, a radio, a 16-bit processor, and buffer memory ICs.

FEATURES

• Support for specific IEEE P802.11 wireless LAN draft standards

• Suitable for low-cost stations and access points

• PCMCIA compliant (version 2.1) interface supporting 16-bit data transfers

• On-chip radio modem for high-throughput data transfers

• Interface to radio providing antenna select, power control, synthesizer programming

• Processor interface support for 80C86, 80C186, V33, and V53A

• On-chip multi-port memory controller on chip for local shared memory and simplified design construction

• E2PROM interface to download host interface configuration data and provide non-volatile card parameter storage

• Low-power mode to minimize power dissipation in batter applications.

• 5-V external and 3.3-V core operation

• 144-pin LQFP package, suitable for PCMCIA Type II Cards (LQFP144-P-2020-0.50-K)