STV0903 Multi-standard advanced demodulator for satellite digital TV and data services set-top boxes Data Brief Features ■ ■ ■ DiSEqCTM 2.x interface GPIOs and interrupt lines Monitoring through I2C serial interface FSK modem – – – – 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 ■ Technology – 90 nm CMOS process – Power saving features ■ Package – LQFP-128-EP 14x14, 0.4 mm pitch, RoHS. Description Interfaces – Dedicated 27 MHz clock generation for back-end decoder – I2C serial bus interface – JTAG interface - boundary scan 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 Dual 8-bit ADC IO and RF AGC Clock generation Slave I2C manager ASIC controller and power management Carrier recovery loop August 2008 CNR estimator Demapper FSK manager Lock indicator and monitoring JTAG boundary scan DVBS2 FEC D[7:0] CLKOUT STROUT DPN ERROR Timing recovery loop Echo concealment equalizer GPIO switch matrix GPIO[13:1] TAP DVBS2 pilots processor and framing Multi-standard demodulator DiSEqCTM 2.0 manager Multi roll-off nyquist and interpolation filters Transport stream manager FIFO Line 1 Viterbi decoder BCH decoder Inner de-interleaver DVBS2 de-framing Reed-solomon decoder CRC checker Energy descrambler Rev 1 For further information contact your local STMicroelectronics sales office. Legacy FEC LDPC decoder 1/5 www.st.com 5 Application 1 STV0903 Application Figure 1. Application diagram for DVB-S2 front-end system STV0903 STV6110A SatTuner I2C SDA, SCL AGC IN,IP QN,QP Choke QM,QP 16 MHz AUX_CLK 27 MHz DISEQC-RX 15 Ω 2/5 XTAL_IN LNBH23 STx7100 or STx7109 MPEG-4 / H.264 Decoder IC IM,IP RF_IN XTAL_OUT SDAT, SCLT AGCRF I2C DISEQC_IN DISEQC_OUT STV0903 2 Ordering information Ordering information Table 1. Ordering information Order code STV0903BAB Packaging LQFP128-14 × 14 mm 3/5 Revision history 3 STV0903 Revision history Table 2. 4/5 Document revision history Date Revision 21-Aug-2008 1 Changes Initial release. STV0903 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. 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