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PS20313 Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers |
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PS20313 Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers |
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1 / 26 page  PS20313 DVB-S Satellite Demodulator Data Sheet Features • Conforms to EBU specification for DVB-S and DirecTV specification for DSS • On-chip digital filtering supports 1 - 45 MSps symbol rates • On-chip 60 or 90 MHz dual-ADC • High speed scanning mode for blind symbol rate/code rate acquisition • Automatic spectral inversion resolution Data Sheet 292103 issue 1 Ordering Information PS20313 C1L1A5 64Pin LQFP Trays PS20313 C1L1AT 64Pin LQFP* Tape and Reel *Pb Free Matte Tin 0°C to +70°C Description • High level software interface for minimum development time • Up to ±22.5 MHz LNB frequency tracking • DiSEqC™ v2.2: receive/transmit for full control of LNB, dish and other components • Compact 64-pin LQFP package (7 x 7 mm) Applications • DVB 1 - 45 MSps compliant satellite receivers • DSS 20 MSps compliant satellite receivers • SMATV (Single Master Antenna TV) trans- modulators • Satellite PC applications The PS20313 is a QPSK/BPSK 1 - 45 MSps demodulator and channel decoder for digital satellite television transmissions to the European Broadcast Union ETS 300 421 specification. It receives analogue I and Q signals from the tuner, digitises and digitally demodulates this signal, implements the complete DVB/DSS FEC (Forward Error Correction) and de- scrambling function. The output is in the form of MPEG2 or DSS transport stream data packets. The PS20313 also provides automatic gain control to the RF front-end device. The PS20313 has a serial 2-wire bus interface to the control microprocessor. Minimal software is required to control the PS20313 because of the built in automatic search and decode control functions. MPEG/ I I/P DSS Timing recovery DVB Packets Decimation Dual ADC De-rotator Matched filter DSS Filtering Phase recovery FEC Q I/P Analog Acquisition Bus I/O Clock Generation 2-Wire Bus AGC Control Interface Control Figure 1 - Functional Block Diagram PLESSEY SEMICONDUCTORS LTD TAMERTON ROAD | ROBOROUGH | PLYMOUTH | DEVON | PL6 7BQ 1 |
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