GPRS/GSM SINGLE-CHIP BASEBAND PROCESSOR

The BCM2121 GPRS/GSM baseband processor offers a high level of system integration, performance, and features for next-generation handsets and radio cards. The BCM2121 is a single-chip baseband device that is applicable for wireless handsets and speakerphones.

FEATURES
• Single 200-pin FBGA device (13 mm × 13 mm)
• GSM voice handset capabilities: FR/EFR/AMR/HR
• Data capability (one to five slots, up to four RX/4 TX slots)
   • GPRS (multislot Class 10) up to 84.4 Kbps
   • HSCSD (multislot Class 10) up to 57.6 Kbps
   • GSM single slot up to 14.4 Kbps
• Multivoltage SIM, PCMCIA, and IrDA compliant interfaces
• GSM850, E-GSM900, GSM1800, and GSM1900 bands
• Extremely low-power design: 3V I/O and 2V core
• Three UART serial ports for data/fax/testing
• Flexible RF transceiver control interface:
   • Integrated PA controller
   • APC DAC with ramping RAM
   • Support straight or multiplexed I and Q
   • Schedule-based programmable serial control
• Power/cost-flexible audio circuitry
   • Noise suppression and echo cancellation for speakerphone and car phone environments
   • Sidetone/microphone amplification control
   • High-output speaker driver
• Flexible clock rates for processors (0 to 52 MHz)
• Real-time clock and alarm