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ST STi7111 HDTV卫星STB解决方案

ST STi7111 HDTV卫星STB解决方案

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ST 公司的STi7111是低成本 HDTV卫星机顶盒(STB)译码器,适用于Microsoft VC-1, H.264 和MPEG-2标准。和STi7109相比,STi7111包括VC-1 和H.264两种视频译码器,更适合于新的低码速应用,以开发非常高性能低成本的HD系统。本文介绍了STi7111的主要性能,方框图以及STi7111 应用方框图。

STi7111:Low-cost HDTV satellite set-top box decoder for Microsoft VC-1, H.264 and MPEG-2

The STi7111 is an HD set-top box / full back-end processor for satellite set-top boxes,
compliant with ATSC, SMPTE VC-1, DVB-S2, DIRECTV, DCII and ARIB BS4 specifications. It provides very high performance for low-cost HD systems. With enhanced performance compared to the STi7109, it includes both VC-1 and H.264 video decoders for new, low bitrate applications.
The main platform target for the STi7111 is the DVB-S2 zapper. Optionally the device can be used in a client box through IP over Ethernet, Multimedia over Coax Alliance (MoCA) or WiFi.
主要特性:
■ Microsoft VC-1, MPEG-2 and H.264 support
■ ST40-300 CPU running at 450 MHz, high performance for Linux, WINOOWs CE and OS21 based systems
■ DVB-S2 and DVB-S front-end integrated demodulators with a fully featured HD advanced decoder system-on-chip (SoC)
■ Flexible ST231 based advanced video decoder
■ ST231 audio decoder at 450 MHz supporting WMA9, AC3, DD+, AAC, AAC+ with SPDIF output
■ HD and SD simultaneous display, 2 video, 3 graphics planes and background color with high quality filtering
■ HDMI/HCDP output plus HD or standard definition (SD) component and composite output
■ Unified DDR2 32-bit interface operating at up to 400MHz
■ Programmable transport interface (PTI) and transport stream (TS) merger with up to 2 digital external TS inputs, 2 internal inputs from internal demodulators and one TS from memory for network client
■ USB 2.0 to support network interface and feature enhancement
■ External memory interface (EMI) with Nand-Flash,Nor-Flash, PCI, peripherals support
■ 10/100 Mbit/s Ethernet MAC with media independent interface (MII) and reduced MII (RMII)
■ Advanced security, SVP compliant, WM DRM compliant
■ Dual smartcard, 4 x UART, 3 x synchronous serial controllers (SSC), soft modem and DAA interface, IR blaster and receiver, UHF Rx digital input
■ DiSEqC 2.0 and FSK modem supported
■ 4 x 4 matrix key front panel switch scanner FSM with key de-bounce
■ 27 x 27mm package, 65nm technology




图1。STi7111方框图



图2。STi7111 应用方框图


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