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STI5200
Low-cost SDTV set-top box decoder for H.264/AVC and MPEG-2
Data Brief
Features
The STI5200 is a single-chip, standarddefinition STB decoder including: - ST40 CPU core, 266 MHz - dual ST231 CPU cores for audio and video decoding, both 400 MHz - transport filtering and descrambling - video decoder: H.264/AVC and MPEG-2
- graphics engine and dual display: enhanced definition ED (480p/576p) and standard definition SD (480i/576i) - audio decoder
The STI5200 also features the following embedded interfaces: - USB 2.0 - digital audio and video auxiliary input - modem
DDR SDRAM
5 x 2-ch S/PDIF PCM out AudioL 2-ch PCM in AudioR Audio DACs Audio decoder and interfaces ST231 core
SD video in
Peripheral I/O and external interrupts
32 ST40 core 266 MHz UDI MMU 32 K Dcache 16 K Icache Int. control
32
Video LMI System LMI
2x I/F SmCard Digital video input STBus USB 2.0 6x GPIO
IR Tx/Rx ILC
MAFE interface 4x UARTs
PWM 3x SSCs
PDES
CP FDMA DAA Clock generator and system services DiSEqC
Video decoder H.264/AVC, MPEG2 ST231 core
2D gamma blitter
CUR GDP
GDP
PTI
Display compositor
LMU Main video display Aux video display EMI
TSmerger/router
Output stage DACs
DENC DACs
TSIN0 TSIN1 TS I/O NRSS-A
Main video output (ED) YPbPr
Aux video output (SD) YC/CVBS
Flash peripherals
February 2007
Rev 1
1/7
www.st.com 1
For further information contact your local STMicroelectronics sales office.
Description
STI5200
1
Description
The STI5200 is a new generation, standard-definition set-top box decoder chip, which provides very high performance for low-cost systems. With enhanced performance over the STi7710, it includes an H.264/AVC decoder for new low-bitrate applications, and dualdecode MPEG-2 capability. Based on the Omega2 (STBus) architecture, this system on chip is a full back-end processing solution for digital terrestrial, satellite and cable standard-definition set-top boxes compliant with ATSC, DVB, DIRECTV, DCII, OpenCable and ARIB BS4 specifications. The STI5200 demultiplexes, decrypts and decodes SD video streams with associated multichannel audio. Video is output to two independently formatted displays: a full resolution display intended for a TV monitor, and a downsampled display intended for a VCR. Connection to a TV or display panel is through an analog component interface. Composite outputs are provided for connection to the VCR with Macrovision protection. Audio is output with optional PCM mixing to an S/PDIF interface, PCM interface or through integrated stereo audio DACs. Digitized analog programs can also be input to the STI5200 for reformatting and display. The STI5200 can render and display graphics, and has a 2D graphics accelerator, two graphics planes and a cursor plane. A dual display compositor provides mixing of graphics and video with independent composition for each of the TV and VCR outputs. The STI5200 includes a stream merger to allow five different transport streams from different sources to be merged and processed concurrently. Applications include DVR time shifted viewing of a terrestrial program while acquiring an EPG/data stream from a satellite or cable front end. The flexible descrambling engine is compatible with required standards including DVB, DES, AES and Multi2.
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STI5200
Applications
2
Applications
The STI5200 has an embedded 266 MHz ST40 CPU for applications and device control. DDR1 SDRAM memory is used for higher performance, to allow the video decoder the required memory bandwidth for H.264 decoding and sufficient bandwidth for the CPU and the rest of the system. A second memory bus is provided for flash memory storing resident software and for connecting peripherals. A hard-disk drive (HDD) can be connected as an expansion drive using the USB 2.0 port. The USB port can also be used to connect to a DOCSIS 2.0 CM gateway for interactive cable applications. The STI5200 is supported by STMicroelectronics' STAPI software. Figure 1. Low-cost satellite SD set-top box
2 x 128 Mbit IR Tx/Rx
DDR1
STV0299 +STB6000 QPSK Rx
Transport stream in
STI5200
RGB/YPbPr
CVBS/YC
VCR
PTSN MAFE I/F Smart cards Flash
3/7
Applications Figure 2. Low-cost cable SD set-top box with return channel
CableCARDTM interface
STI5200
Flash
2 x 128 Mbit
DDR1 Broadcast
Tuner and SAW filter
STVi498 IB data/ OOB
Tuner and SAW filter
EMI
Cable front end QAM/QPSK transceiver Diplex filter Upstream
PGA
STI5200
RGB/YPbPr
IR Tx/Rx CVBS/YC RS232
Smart cards
VCR
Figure 3.
Low-cost dual satellite and terrestrial SD set-top box with HDD
IR Tx/Rx Flash EMI DDR1
STV0299 +STB6000 QPSK Rx
STI5200 DVB-CI
RGB/YPbPr
Tuner
STV0370 RS232
8VSB Rx
USB 2.0 Smart cards PSTN
MAFE I/F
HDD
(expansion)
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STI5200 Figure 4. Low-cost SD IP-TV set-top box with HDD
IR Tx/Rx Flash EMI DDR1
Applications
Ethernet RJ45
Ethernet controller
STI5200
RGB/YPbPr
RS232 USB 2.0 Smart cards HDD
(expansion)
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Revision history
STI5200
3
Revision history
Table 1.
Date 16-Feb-2007
Document revision history
Revision 1 Initial release. Changes
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STI5200
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