Hyper transport technology

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Hyper transport technology

  1. 1. HYPER TRANSPORT TECHNOLOGY BY, U.L.SUJATHA 08Q61A0542
  2. 2. AGENDA: <ul><li>INTRODUCTION </li></ul><ul><li>HISTORY </li></ul><ul><li>HOW IT WORKS? </li></ul><ul><li>IMPLEMENTATIONS </li></ul><ul><li>PROS AND CONS </li></ul><ul><li>CONCLUSION </li></ul>
  3. 3. INTRODUCTION <ul><li>Hyper Transport (HT) is a state-of-art packet-based, high-bandwidth, scalable, low latency point-to-point interconnect technology that links processors to each other, processors to coprocessors and processors to I/O and peripheral controllers. </li></ul><ul><li>Hyper Transport is an open standard technology managed, promoted and licensed to the industry at large by the Hyper Transport Consortium </li></ul>
  4. 4. WHY HTT IS DEVELOPED? THE I/O BANDWIDTH PROBLEM <ul><li>While microprocessor performance continues to double every eighteen months, the performance of the I/O bus architecture has lagged, doubling in performance approximately every three years. </li></ul><ul><li>Every time processor performance doubles, latency only increases by a factor of 1.2. </li></ul>
  5. 5. THE I/O BANDWIDTH PROBLEM
  6. 6. THE HYPERTRANSPORT™ TECHNOLOGY SOLUTION <ul><li>HyperTransport is intended to support “in-the-box” connectivity </li></ul><ul><li>High-speed, high-performance, point-to-point link for interconnecting integrated circuits on a board. </li></ul><ul><li>Max signaling rate of 1.6 GHz on each wire pair, a HyperTransport technology link can support a peak aggregate bandwidth of 12.8 Gbytes/s. </li></ul>
  7. 7. THE HYPERTRANSPORT™ TECHNOLOGY SOLUTION
  8. 8. HISTORY:
  9. 9. HYPERTRANSPORT™ DESIGN GOALS <ul><li>Improve system performance </li></ul><ul><li>Simplify system design </li></ul><ul><li>Increase I/O flexibility </li></ul><ul><li>Maintain compatibility with legacy systems </li></ul><ul><li>Ensure extensibility to new system network architecture (SNA) buses </li></ul><ul><li>Provide highly scalable multiprocessing systems </li></ul>
  10. 10. FLEXIBLE I/O ARCHITECTURE <ul><li>The physical layer defines the physical and electrical characteristics of the protocol. This layer interfaces to the physical world and includes data, control, and clock lines. </li></ul><ul><li>The data link layer includes the initialization and configuration sequence, periodic cyclic redundancy check (CRC), disconnect/reconnect sequence, information packets for flow control and error management, and double word framing for other packets. </li></ul><ul><li>The protocol layer includes the commands, the virtual channels in which they run, and the ordering rules that govern their flow. </li></ul><ul><li>The transaction layer uses the elements provided by the protocol layer to perform actions, such as reads and writes. </li></ul><ul><li>The session layer includes rules for negotiating power management state changes, as well as interrupt and system management activities. </li></ul>
  11. 11. DEVICE CONFIGURATIONS
  12. 12. ELECTRICAL CONFIGURATION <ul><li>The signaling technology used in HyperTransport technology is a type of low voltage differential signaling (LVDS ). </li></ul><ul><li>LVDS has been widely used in these types of applications because it requires fewer pins and wires. </li></ul><ul><li>Cost and power requirements are reduced because the transceivers are built into the controller chips. </li></ul>
  13. 13. HYPERTRANSPORT ENVIRONMENTS
  14. 14. HYPERTRANSPORT ENVIRONMENTS
  15. 16. ADVANTAGES <ul><li>It is a packet based technology </li></ul><ul><li>Provides low latency </li></ul><ul><li>High bandwidth </li></ul><ul><li>Decreases no. of buses </li></ul><ul><li>Reduces packet overhead </li></ul>
  16. 18. CONCLUSION <ul><li>Hyper Transport technology is a new high-speed, high-performance, point-to-point link for integrated circuits. It provides a universal connection designed to reduce the number of buses within the system, provide a high-performance link for embedded applications, and enable highly scalable multiprocessing systems. </li></ul><ul><li>Doubtlessly future will see the tremendous advancement of Hyper Transport technology. Hyper Transport technology will bring a revolution in the bus architecture. </li></ul>

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