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STiH251
Advanced STB decoder with
integrated DVB-T2 and DVB-T demodulator
Data brief
Features
■ Integrated DVB-T2 and DVB-T demodulator
– User-selectable mode
– Compatible with low to high IF tuners
– ADC for RF signal strength indicator
■ Advanced high-definition video decoding
(H264/VC-1/MPEG2)
■ Advanced standard-definition video decoding
(H264/VC-1/MPEG2/AVS)
■ Advanced multi-channel audio decoding
(MPEG 1, 2, MP3, DD/DD+, AAC/AAC+,
WMA9/WMA9Pro)
■ Linux, Windows CE and OS21 compatible
applications CPU
■ 32-bit DDR1/DDR2 compatible local memory
interface
Resets Analog out
JTAG
Clocks
Modes
PCM I/O
S/PDIF out External interrupts
■ Multi-stream, DVR capable transport stream
processing
■ Extensive connectivity (dual USB hosts,
e-SATA, Ethernet MAC/MII/RMII and PCI)
■ Advanced security and DRM support including
SVP, MS-DRM and DTCP-IP
Description
The STiH251 uses state-of-the-art process
technology to provide a fully featured HD AVC,
DVB-T2 and DVB-T demodulator/decoder IC.
It is a highly integrated system-on-chip, suitable
for STB markets across terrestrial, and
terrestrial/IP hybrid networks worldwide.
STB peripherals I/O
CPU
Transport
Security
Transport streams
Parallel/serial in/out
Clock Gen
System serv
Dual FDMA
Bdisp Blitter
Video decoder
Demodulator
DVB-T2
DVB-T
streams
IF inTransport
Audio I/O
PCM players
PCM reader
DACs
Audio decoder
STBus
Display Video I/O
Peripherals
SSC
UART
MAFE
PWM
Infrared
Smartcard
Digital video HD/SD in/out
Analog video HD/SD out
System
interfaces
EMI
PCI
SPI Flash Ctrl
LMI
Connectivity
Flash, SFlash
Flash, SFlash
NOR, NAND
NOR, NAND
PCI Peripherals
Serial Flash
DDR1/DDR2
Memory
USB
e-SATA
Ethernet
DAA
March 2011 Doc ID 18339 Rev 2 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
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Introduction STiH251
1 Introduction
The STiH251 is designed to be optimized, both in cost and performance, with the most
advanced can tuners and silicon tuners available on the market and is compliant with
DVB-T2 and DVB-T standards.The STiH251 front end has one of the lowest power
consumptions on the market today. This has been made possible thanks to technology and
clock rate management. This also has the advantage of improving channel acquisition and
re-acquisition efficiency.
The STiH251 is delivered with a full suite of low-level drivers and application software, with
detailed user manuals and reference design schematics to enable seamless integration in
complex digital TV systems such as iDTV, set-top boxes or PCTV dongles.
Features Benefits
Combines a configurable DVB-T2 and DVB-T
demodulator with STB decoding and display
functions
Applications CPU,
32K I cache, 32K D cache
STMicroelectronics’ video decoding system with
ST231 processor
Dual USB 2.0 hosts, e-SATA,
Ethernet MAC with MII/RMII and TMII,
PCI
Low power process, design and architecture Best in class, low power standby mode, to meet
Advanced 2D graphics and display subsystem
which also supports 3D user interface effects
and 1080p60 display output
This highly integrated SoC helps to reduce board
area and manufacturing cost, allowing low cost and
small size STBs to be designed for DVB-T2 and
DVB-T networks
Superscalar performance from a single CPU core,
using standard tools and operating systems (Linux,
OS21)
Decoding of advanced high definition standards for
MPEG2, H264, VC-1 broadcast, with the
performance and flexibility for web-based content
decoding such as Flash
®
Real
Extensive high speed connectivity for the widest
range of STB peripherals, such as Flash drives,
external HDDs, home network controllers (for
example MoCA
on
emerging energy standards for STBs. Dynamic
configuration of power to individual sub-systems
enables power-efficient active standby modes
Allows visually appealing user interfaces and video
rich navigation to be offered to consumers, while
high quality progressive output can be watched on
the latest high definition displays
®
®
, DivX™, MJPEG and
, Wi-Fi), DOCSIS® modem and so
2/4 Doc ID 18339 Rev 2
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STiH251 Revision history
2 Revision history
Table 1. Document revision history
Date Revision Changes
16-Dec-2010 1 Initial release.
16-Mar-2011 2 Reference to DVB-C removed
Doc ID 18339 Rev 2 3/4
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STiH251
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