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STI5189

Low-cost QPSK demodulator and MPEG2 decoder for set-top box applications

STMicroelectronics 

STi5189

Introduction

1.1

Features summary

The STi5189 has the following features:

● Embedded QPSK demodulator

– Fast channel acquisition

– Compatible with direct conversion tuners

– Digital carrier and timing recovery loops

– DVB-S decoding

– Up to 60 Msps operation

– Automatic spectral inversion ambiguity resolution

– Digital cancellation of A/D offset

– Digital Nyquist root filter

● High performance CPU for applications, middleware, drivers, audio decoding and

network protocols

– ST40-300, dual-issue, applications CPU

– FPU, MMU, 32K instruction, 32K data, 2-way, set-associative caches

– Supports OS21 and Linux operating systems

– Target speed > 350 MHz delivering >580DMIPs

● Single, 16-bit wide, unified local memory interface

– Supports both SDR SDRAM up to 166 MHz and DDR1 SDRAM up to 200 MHz

● MPEG2 MP@ML video decoder, dual SD decoding/PIP capable

● Audio sub-system

– MPEG-1 layers I/II decoding

– MP3 decoding

– Dolby Digital 5.1 decoding and down mix to Stereo/Pro-logic

– Concurrent decoding of audio description

– Optional feature: BTSC stereo encoding

– PCM mixing with sample rate conversion

– Simultaneous audio decode and output of Dolby streams on S/PDIF

IEC60958/IEC61937 digital audio output interface

– Integrated stereo audio DAC system

● Programmable external memory interface

– Four separately configurable banks, 8/16-bit wide

– SRAM, peripheral, NOR Flash, NAND Flash, Burst Mode Flash support

– Boot from NOR or NAND Flash

– Support for DVB-CI module host interface

● Interface to, and boot from, Serial FLASH via high speed SPI interface

– Dual output read support

● Graphics/Display processing

– High performance 2-D graphics blitter accelerator and display compositor, Link list

control

Doc ID 15458 Rev 3

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