MSM7712

MSM7712 Wireless LAN Baseband Controller 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. The MSM7712 provides a seamless interface to the radio, hoist, processor, and memory subsystems. The device directly interfaces with the PCMCIA R2.1 and ISA bus, with support for 16-bit data transfers. The device can control antenna select, synthesizer programming, and power-save modes. The MSM7712 provides FH PLPC framing, with the FH modem on-board. A bypass mode allows support for other standards. MSM7712 firmware is available from Oki Semiconductor. Portable handheld systems inherently require minimal current dissipation during operation and standby modes. The MSM7712 offers low power consumption via its implementation of a 3-V core. Either 3-V or 5-V I/O are available for optimal RF and host-interface design. The ...