tinyos meets silicon n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
TinyOS Meets Silicon PowerPoint Presentation
Download Presentation
TinyOS Meets Silicon

Loading in 2 Seconds...

play fullscreen
1 / 16

TinyOS Meets Silicon - PowerPoint PPT Presentation


  • 143 Views
  • Updated on

TinyOS Meets Silicon. Jason Hill NEST Retreat Summer 2002. Breaking Out. COTS hardware has brought us this far but… Next step is custom silicon Like it or not, our platform progress is tied to hardware/silicon design cycle times Silicon give us: Size Cost Performance. Talk Outline.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

TinyOS Meets Silicon


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
    Presentation Transcript
    1. TinyOS Meets Silicon Jason Hill NEST Retreat Summer 2002

    2. Breaking Out • COTS hardware has brought us this far but… • Next step is custom silicon • Like it or not, our platform progress is tied to hardware/silicon design cycle times • Silicon give us: • Size • Cost • Performance

    3. Talk Outline • Design History • First Attempt at Silicon • Chip results • Second generation design • Next Steps

    4. Design Lineage • COTS dust prototypes (Kris Pister et al.) • weC Mote (30 produced) • Rene Mote (850 produced) • Dot (1000 produce) • Mica node (current, 1800 produced) • Time warp accelerator for MICA • Silicon prototype ?

    5. First Silicon Goals • Continue trend of building and evaluating • Goal is to build something to get momentum • Learn “economics of silicon” • RF Accelerator designed as mica add-on • Increase RF transmission speed and reliability while decreasing CPU involvement

    6. Capabilities • RF Communication Support • Start Symbol Detection • Signal clock extraction and continual resynchronization • Transmission and reception buffering to relax CPU real-time constraints • Energy Consumption • 1 Mbps (> 100 uA) • Mote Requires approximately 3mA of CPU.

    7. “Mote Chip” Goals • Replicate and extend the functionality of the MICA • Decrease size of node to cubic millimeters • Reduce cost to <$1 • Include AVR-like* Core, ADC, RF Communication Support, UART, SPI, RAM, Radio, Timing modules • Target shortcoming of COTS capabilities

    8. Experimental Platform • Silicon is hard and expensive • Designs must be correct the first time • Simulation is nice but very time consuming • FPGAs provide essential hardware debugging mechanism

    9. Xilinx XCV2000E 2.5 million gates – 10x the size of an AVR core Also has… Ethernet A/V Encoder Compact Flash Internal and External RAM Mode Chip experimental setup

    10. Silicon TinyOS Support

    11. Communication Interface • Hardware provides ‘AM’ interface • Same functionality originally implemented in hardware • Hardware handles • Message send command with TOSMsgPtr • Hardware signals • Message arrival event with TOSMsgPtr • CPU communication overhead dropped from approx. 2MIPS down to 0.

    12. First Prototype 2mm • IO Pads • RAM blocks • MMU logic • Debug logic • ADC • CPU Core • RF Place Holder Core Area only 50% full…

    13. Chip Area Breakdown • 3K RAM = 1.5 mm2 • CPU Core = 1mm2 • RF COMM stack = .5mm2 • RADIO = .25 mm2 • ADC 1/64 mm2 • I/O PADS

    14. Core Area Breakdown

    15. External Components Required • Current Prototype • 2 External clock generators • 1 External radio • Power source • End Goal • 1 External Inductor (RF oscillation) • 1 External Crystal (time keeping) • Power source

    16. Conclusion • Custom Silicon is available to us • Silicon helps with size, performance, and cost • 4mm2 Mote Chip prototype is due back August 1 • Full mote chip to be sent out November ‘02