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STA400A| Datasheet

By datasheet - April 3rd, 2008

STA400A| Datasheet

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STA400A
XMRADIO SDARS CHANNEL DECODER
DATA BRIEF

Features:
Front End Interface

Two Internal 10 bit A/D converters Two QPSK demodulators for satellite branch One multicarrier demodulator for terrestrial branch Satellite symbol frequency: 1.64 MBaud Terrestrial symbol frequency: 2.99 MBaud Digital root raised cosine Nyquist filter: 15% roll-off FFT length: 768 sub-carriers Full digital carrier and frequency recovery and tracking loops Frequency inversion compensation for highside/low-side mixer injection Lock detectors, C/N indicator, on chip BER estimators Two digital AGCS: internal signal power estimation and filtering 1 bit PDM AGCS control signal outputs

TQFP144

Satellite depuncturing: Rate 3/4 Terrestrial depuncturing: Rate 3/5 Convolutional time deinterleaver over 4.7 sec Block Deinterleaver over 2 RS blocks Reed-Solomon decoder: (255,223). Up to 16 bytes correction capability. Energy dispersal descrambler Sat-Sat and Terr-Sat diversity combining

Back End Interface

TDM Decoding and Management

Two payload channel bitstream interfaces Payload channel selection logic Designed to work with the STA450A service and source decoder

Satellite and Terrestrial Frame Synchronization Satellite Phase Ambiguity Resolution TDM demultiplexing Prime Rate Channel (PRC) demultiplexing External memory controlling

Low Power Technology

1.8V, 0.18um technology 3.3V capable I/Os

Control

Forward Error Correction

Viterbi decoder: K=7, R=1/3

IIC-BUS Slave Control Interface Device address: 1101010

Order codes
Part number STA400A STA400A13TR Temp range, C -40 to +85 -40 to +85 Package TQFP144 TQFP144 Packing Tube Tape & reel

October 2005
For further information contact your local STMicroelectronics sales office.

Rev 1 1/5
www.st.com
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