GW3887A Datasheet | Conexant

Wireless LAN Integrated Medium Access Controller with Baseband Processor The Conexant GW3887A Wireless LAN Integrated Media Access Controller with Baseband Processor is part of both the PRISM GT™ single band and PRISM WWR™ dual band radio chip sets. The GW3887A directly interfaces with Conexant’s ISL3686B Single Band Direct Conversion Transceiver. Adding Conexant’s ISL3084 5GHz VCO and ISL3980 Power Amp pletes an end-to-end WLAN chip set solution pliant with 802.11b/g standards. Additionally, the GW3887A directly interfaces with Conexant’s ISL3692 Dual Band Direct Conversion Transceiver. Adding Conexant’s ISL3092 11GHz VCO and ISL3992 Dual Band Power Amp pletes an end-to-end WLAN chip set solution pliant with 802.11a/b/g/h/i/j standards. The 802.11 protocol is implemented in firmware supporting custom WLAN solutions. Features - Firmware implements the full IEEE 802.11a/b/g/h/i/j Wireless LAN MAC protocols - Internal WEP Engine allows 64 or 128 bit Encryption - AES Hardware Accelerator - Start-up modes allow the USB vendor and device ID to be initialized from a small external serial EEPROM. This allows firmware to be downloaded from the host. - On-chip SRAM memory - A low frequency crystal oscillator can maintain time, which allows the high frequency clock source to be powered off during sleep mode. - Firmware controlled antenna diversity - Data Rates: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, & 54Mbps - Modulation: OFDM with BPSK, QPSK, 16QAM, 64QAM; DBPSK; DQPSK and CCK - Convolutional coding and interleaving on all OFDM rates - Targeted for OFDM Multipath Delay Spreads >800ns for 6Mbps, and >100ns for 54Mbps - Targeted for CCK Multipath Delay Spreads >90ns at 11Mbps, >200ns at 5.5Mbps and >360ns at 1 and 2Mbps - Direct interface with the ISL3692 and ISL3686 Direct Conversion transceiver - USB 2.0 Wireless LAN Adapters The GW3887A improvements over the GW3887 include the addition of an internal 48MHz oscillator, which eliminates several...