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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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STA002 Datasheet(PDF) 1 Page - STMicroelectronics |
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STA002 Datasheet(HTML) 1 Page - STMicroelectronics |
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1 / 43 page  FRONT_END INTERFACE: IF input carrier frequency: f = 1.84 MHz Single internal 6 bit A/D converter QPSK demodulation Input symbol frequency: Fs = 1.84 Msymbols/s Digital Nyquist root filter: - roll-off value of 0.4 Digital carrier loop: - on-chip quadrature demodulator and tracking loop - lock detector - C/N indicator Digital timing recovery: - internal timing error evaluation, filter and correction Digital AGC: - internal signal power estimation and filter - output control signal for AGC (1 bit PWM) FORWARD ERROR CORRECTION: Inner decoder: - Viterbi soft decoder for convolutional codes, constraint length M=7, Rate 1/2 Deinterleaver block Outer decoder: - Reed-Solomon decoder for 32 parity bytes; correction of up to 16 byte errors - Block lengths: 255 - Energy dispersal descrambler BACK_END INTERFACE: Broadcast Channel selection Audio Service Component selection to MPEG decoder Service Component selection CONTROL: I 2C serial Bus control interface DECRYPTION: WES scheme supported DESCRIPTION Designed for World Space satellites digital audio receivers, the STA002 Digital Receiver Front-end integrates all the blocks needed to demodulate incoming digital satellite audio signals from the tuner: analog to digital converter, QPSK demodu- lator, signal power estimator, automatic gain con- trol, Viterbi decoder, deinterleaver, Reed-Solo- mon decoder and energy dispersal descrabler. Its advanced error correction functions guarantees a low error rate even with small low gain receiver antennas. Additional functions include the selection of broadcast channel, service components and audio components for source decoding: - The MPEG Audio bitstream is provided at the serial audio output port. - The Broadcast Channel is provided to the serial data output port. - The Service Component is provided at the SC output interface. World Space encryption scheme is supported for pay programs and paging. January 2002 ® TQFP44 STA002 STARMAN ™ CHANNEL DECODER 1/43 |
Número de pieza similar - STA002 |
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Descripción similar - STA002 |
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