器件名称:
STA264
功能描述:
Sirius overlay decoder
文件大小:
107.11KB 共6页
简 介:
STA264 Sirius overlay decoder Data Brief Features ■ ■ ■ ■ ■ ■ De-multiplexes the incoming overlay data stream from the G3 Baseband processor Maximal Ratio Combines the signals from the three streams of data (TDM1, TDM2, COFDM) Performs diversity combining two demodulated soft symbol streams Utilizes internal TDM demodulators for diversity combining cost sensitive applications Performs error correction on the overlay data Closes the processing loop to control the Diversity Combiner or accepts second L2 input for internal combining Presents data to external application processors Channels I2S data from Baseband to Application Processors – Data can be uncompressed audio – Data can be "Data" Receives SSPv2 Commands – UART – Parse data for Overlay and Legacy tune commands – Navigation ■ ■ ■ TFBGA249 Controls the Baseband Processor and DSP via UART ports – Required so theApplication Processor can interface to a single client Provides commands to the Application Processor Memory Interfaces – SDR SDRAM to support the four second buffer and de-interleaving – FLASH for the storage of Firmware ■ ■ ■ Description The STA264 ASIC is a fully integrated processor for Sirius Satellite Digital Radio Service (SDARS) that allows for decoding of Layer 2 hierarchical data. Table 1. Device summary Order code STA264 STA264TR Package TFBGA249 TFBGA249 Packing Tray Tape and reel July 2007 Rev 2 1/6 www.st.com 6 For further information contact your local STMicroelectronics sales office. ……
