SiRf的GPS介绍

GSC3 Product Insert 1065-0137SiRFstarIII GPS Single Chip
High Performance GPS in a Small Form Factor

SiRF Chips and Software

ARCHITECTURE HIGHLIGHTS
Next Generation GPS Performance
High sensitivity for indoor fixes Extremely fast TTFF’s at low signal levels Real time navigation for location based services Low 100ms interrupt load on microprocessor for easy IP implementation SBAS (WAAS and EGNOS) support

FAMILY HIGHLIGHTS
GSC3 - Digital and RF
200,000+ effective correlators for fast TTFF and high sensitivity acquisition Supports 20-Channel GPS Digital and RF in a single package Small 7mm x 10mm X1.4mm BGA package 4Mb integrated FLASH memory option (GSC3f) ARM7TDMI CPU and 1Mb SRAM to enable user tasks Accepts 7 reference frequencies between 13MHz and 33MHz Requires mininum external RF components Extensive GPS receiv