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Published byEdwin Pitts Modified over 9 years ago
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SC2005 Product Overview DTV Source Applications Broadband Entertainment Division July 2001
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SC2005 Overview - July 2001 3-2 LSI Logic Confidential ™ SC2005 - An Evolutionary Approach SC200564X05 MPEG-2 A/V Decoder Proven LSI STB Technology SECAM PAL/NTSC 2D Graphics SC2005 Developed Technology 641X8 CPU/ MPEG-2 Transport Demux
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SC2005 Overview - July 2001 3-3 LSI Logic Confidential ™ Previous LSI Solution for STB
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SC2005 Overview - July 2001 3-4 LSI Logic Confidential ™ SC2005 Solution SC2005 Single Chip Source Decoder
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SC2005 Overview - July 2001 3-5 LSI Logic Confidential ™ SC2005 Features EZ4102 TinyRISC MIPS CPU DVB MPEG-2 Transport A/V Decoder 2D On-Screen Graphics Video Mixer and Encoder Audio DAC Peripherals UART, SmartCard, 1284, IR, I2C, Teletext, DMA, GPIO
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SC2005 Overview - July 2001 3-6 LSI Logic Confidential ™ Architectural Advantages SC2005 Addresses Performance Needs by Large on-chip cache memories 8K Direct Map data cache 16K 2-way associative instruction cache Efficient memory bus system (S-Bus) Separate CPU/OSG and MPEG Video SDRAM bus Flexible E-Bus architecture interfaces to 8, 16 and 32 bit devices glueless connection to asynchronous and synchronous FLASH Efficient interrupt structure
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SC2005 Overview - July 2001 3-7 LSI Logic Confidential ™ SC2005 Clocks 27 MHz VCXO input Internal PLL generates – 27, 54, 81 and 108 MHz 27 MHz AV Decoder and Peripherals 54 MHz B-Bus, E-Bus, Timers, Video subsystems and Transport 81 MHz AV decoder memory – SDRAM-A 108 MHz CPU core CPU/transport/OSG memory – SDRAM-B
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SC2005 Overview - July 2001 3-8 LSI Logic Confidential ™ SC2005 Block Diagram Channel EJTAG Port E-Bus CPU/OSG/XPT/Periph SDRAM I/F TinyRISC CPU Transport Demultiplexer and DVB Descrambler 2 GP Peripheral DMA Audio/Video Decoder (L64105 core) Video Mixer and Encoder On-Screen Graphics A/V SDRAM I/F Modem I/F Infrared Smart Card 1 IEEE 1284 Smart Card 0 UART 1 Tele Text I2CI2CGPIOUART 0 27 MHz Clock IEE1284Smart CardsRS232CTelephoneI/R RXI/R TXI2CI2CFront Panel S-Bus I-Bus
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SC2005 Overview - July 2001 3-9 LSI Logic Confidential ™ A/V Decoder Mixer and Encoder OSG TinyRISC CPU Transport 2 GP Peripheral DMA CPU Data Read/Write SI Data OSG Display Program Cache Refill External Peripherals Modem I/F Infrared Smart Card 1 IEEE 1284 Smart Card 0 UART 1 Tele Text I2CI2CGPIOUART 0 Still Picture DMA Block Move A/V Decode SDRAM-A SDRAM-B On-Chip Peripherals Transport Stream SC2005 Data Flow
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SC2005 Overview - July 2001 3-10 LSI Logic Confidential ™ SC2005 MPEG-2 Data Flow Transport MPEG-2 transport SDRAM-B SI data AV PES Video plane OSG planes 4:2:2 Video Decode & Frame stores DENC & VDACs MixerOSG AV DecoderSDRAM-A
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SC2005 Overview - July 2001 3-11 LSI Logic Confidential ™ Applications for SC2005 Digital Set-top Box PVR – Personal Video Recorder Internet Appliance / Network applications Play from Memory mode AV Decoder gets its input from SDRAM-B, not Transport Use AV DMA transfers to move data from SDRAM-B into AV decoder memory in SDRAM-A
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SC2005 Overview - July 2001 3-12 LSI Logic Confidential ™ PVR basics
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SC2005 Overview - July 2001 3-13 LSI Logic Confidential ™ PVR basics
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SC2005 Overview - July 2001 3-14 LSI Logic Confidential ™ PVR basics
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SC2005 Overview - July 2001 3-15 LSI Logic Confidential ™ PVR basics This mode is NOT supported by SC2005
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SC2005 Overview - July 2001 3-16 LSI Logic Confidential ™ PVR basics
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SC2005 Overview - July 2001 3-17 LSI Logic Confidential ™ Data flow for ATA transfers
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SC2005 Overview - July 2001 3-18 LSI Logic Confidential ™ Summary of HDD features
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SC2005 Overview - July 2001 3-19 LSI Logic Confidential ™ Play from Memory Transport (not used) PES and User data AV PES via AV DMA Video plane OSG planes 4:2:2 Video Decode & Frame stores DENC & VDACs MixerOSG AV DecoderSDRAM-A SDRAM-BE-Bus
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