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SC2005 Product Overview

SC2005 Product Overview. DTV Source Applications Broadband Entertainment Division July 2001. 64X05 MPEG-2 A/V Decoder. SC2005. 2D Graphics. 641X8 CPU/ MPEG-2 Transport Demux. SC2005 - An Evolutionary Approach. SECAM PAL/NTSC. Proven LSI STB Technology. SC2005 Developed

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SC2005 Product Overview

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  1. SC2005 Product Overview DTV Source Applications Broadband Entertainment Division July 2001

  2. 64X05 MPEG-2 A/V Decoder SC2005 2D Graphics 641X8 CPU/ MPEG-2 Transport Demux SC2005 - An Evolutionary Approach SECAM PAL/NTSC Proven LSI STB Technology SC2005 Developed Technology

  3. Previous LSI Solution for STB

  4. SC2005 Solution SC2005Single ChipSource Decoder

  5. 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

  6. 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

  7. 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

  8. CPU/OSG/XPT/Periph SDRAM I/F A/V SDRAM I/F Audio/Video Decoder TinyRISC CPU (L64105 core) Transport Demultiplexer and DVB Descrambler Video Mixer and Encoder 2 GP Peripheral DMA On-Screen Graphics IEEE 1284 Smart Card 1 Smart Card 0 Modem I/F Tele Text Infrared UART 1 UART 0 I2C GPIO SC2005 Block Diagram E-Bus EJTAG Port Channel 27 MHz Clock I-Bus S-Bus IEE1284 Smart Cards RS232C Telephone I/R RX I/R TX I2C Front Panel

  9. CPU Data Read/Write SI Data OSG Display Block Move Still Picture DMA A/V Decode SDRAM-B SDRAM-A Program Cache Refill TinyRISC CPU A/V Decoder External Peripherals Transport Mixer and Encoder Transport Stream OSG 2 GP Peripheral DMA IEEE 1284 Smart Card 1 Smart Card 0 Modem I/F Tele Text Infrared UART 1 UART 0 I2C GPIO On-Chip Peripherals SC2005 Data Flow

  10. Transport SDRAM-B MPEG-2 transport AV Decoder SDRAM-A OSG Mixer DENC & VDACs SC2005 MPEG-2 Data Flow SI data Decode & Frame stores AV PES Video plane OSG planes 4:2:2 Video

  11. 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

  12. PVR basics

  13. PVR basics

  14. PVR basics

  15. PVR basics • This mode is NOT supported by SC2005

  16. PVR basics

  17. Data flow for ATA transfers

  18. Summary of HDD features

  19. AV Decoder SDRAM-A OSG Mixer DENC & VDACs Play from Memory AV PES via AV DMA Transport (not used) SDRAM-B E-Bus PES and User data Decode & Frame stores Video plane OSG planes 4:2:2 Video

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