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STV0903
Multi-standard advanced demodulator for satellite digital TV and data services set-top boxes
Data Brief
Features
Demodulation - DIRECTVTM and DVBS QPSK - DVBS2 QPSK and 8PSK - Digital Nyquist root filter with 0.20, 0.25, 0.35 excess bandwidth factors Decoding - Up to 95 mega channel bits per second (Mcbps) at input to DVBS2 FEC - Up to 130 Mcbps DVBS or DIRECTVTM at input to legacy FEC Interfaces - Dedicated 27 MHz clock generation for back-end decoder - I2C serial bus interface - JTAG interface - boundary scan
- - - -
DiSEqCTM 2.x interface GPIOs and interrupt lines Monitoring through I2C serial interface FSK modem
Technology - 90 nm CMOS process - Power saving features Package - LQFP-128-EP 14x14, 0.4 mm pitch, RoHS.
Description
STV0903 is a high performance satellite demodulator capable of handling DVB-S, DIRECTVTM legacy and DVBS2 (QPSK and 8PSK) constant coding and modulation signals for satellite broadcast.
AGCRF [IN, IP] [QN, QP] XTALI XTALO SCL, SDA SDAT, SCLT DISEQCIN DISEQCOUT FSKRX_IN FSKRX_OUT GPIO[13:1] TAP JTAG boundary scan Transport stream manager FIFO Line 1 Dual 8-bit ADC Clock generation Slave I2C manager Multi roll-off nyquist and interpolation filters DVBS2 pilots processor and framing Echo concealment equalizer Demapper
IO and RF AGC ASIC controller and power management
Multi-standard demodulator Carrier recovery loop Timing recovery loop CNR estimator
DiSEqCTM 2.0 manager FSK manager GPIO switch matrix
Lock indicator and monitoring
DVBS2 FEC LDPC decoder BCH decoder DVBS2 de-framing CRC checker
Legacy FEC Viterbi decoder Inner de-interleaver Reed-solomon decoder Energy descrambler
D[7:0] CLKOUT STROUT DPN ERROR
August 2008
Rev 1
1/5
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Application
STV0903
1
Application
Figure 1. Application diagram for DVB-S2 front-end system
STV6110A SatTuner SDA, SCL AGC IN,IP RF_IN QN,QP STV0903 I2C SDAT, SCLT AGCRF IM,IP QM,QP I2C STx7100 or STx7109 MPEG-4 / H.264 Decoder IC
XTAL_OUT
16 MHz
XTAL_IN
AUX_CLK
Choke
27 MHz DISEQC-RX DISEQC_IN DISEQC_OUT
15
LNBH23
2/5
STV0903
Ordering information
2
Ordering information
Table 1. Ordering information
Order code STV0903BAB Packaging LQFP128-14 x 14 mm
3/5
Revision history
STV0903
3
Revision history
Table 2.
Date 21-Aug-2008
Document revision history
Revision 1 Initial release. Changes
4/5
STV0903
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