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SOC Virtual Prototyping: An Approach towards fast System-On-Chip Solution

SOC Virtual Prototyping: An Approach towards fast System-On-Chip Solution. Date – 09 th April 2012 Mamta CHALANA Tech Leader ST Microelectronics Pvt. Ltd, Bangalore. Agenda. Introduction of System On Chip System On Chip Design Flow What is Virtual prototype ? TLM Methodology

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SOC Virtual Prototyping: An Approach towards fast System-On-Chip Solution

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  1. SOC Virtual Prototyping: An Approach towards fast System-On-Chip Solution Date – 09th April 2012 Mamta CHALANA Tech Leader ST Microelectronics Pvt. Ltd, Bangalore

  2. Agenda • Introduction of System On Chip • System On Chip Design Flow • What is Virtual prototype ? • TLM Methodology • What is SystemC ? • Image Co-Processor Architecture • Image Signal Processor TLM Platform • What is TLMdevice? • Dataflow of the TLM platform • TLMdevice demonstrator • TLMdevice Benefits • Results & Conclusions • Thanks 

  3. Introduction : System On Chip • How does a system-on-chip like today? Memory Processor with Embedded SW Interconnect Bus Peripherals

  4. Time To Market saved Early system integration Virtual Prototype System On Chip Design Flow • Solution: • Raise the level of abstraction for system level design • Support HW/SW co-development • Bottlenecks: • Explosive Complexities • Cost • Time to market Pressure TLM or Virtual Prototype fulfills both conditions as the ideal solution • Benefits of V.P.: • Better Time to Market • Quality Confidence • Communication Point • Reference Simulation System Development

  5. Co-simulation Functional Embedded Software Functional Verification TLM Functional Models Embedded Software Optimization Timed Models Architecture Analysis TLM Methodology • It is the single IP/SOC executable reference model that allows: • Rationalized modeling effort • Consistent development • Cross-team communication

  6. What is SystemC • SystemC is a modeling platform • A set of C++ class library • C++ extensions to add hardware modeling constructs • Simulation Kernel • Supports different levels of abstraction like High Level Functional Models, Loosely Timed Model, Approximate Timed Models, Timed Models, Cycle Accurate models • Models developed in SystemC can act as unique reference model for all teams in product design phase

  7. Image Co-Processor Architecture The task of the Image Co-Processor is to process the data from the sensor into a good quality image conforming to a standard format (YUV or RGB) RAWBayer Data Image Processing Pipe (hardware) YUV or RGB Sensor Stats Gathering Control MicroProcessor (Firmware)

  8. Image Signal Processor TLM Platform

  9. What is TLMdevice? • Way to Connect TLM Simulations with real hardware devices like UART, Display and Sensors. • Set Of Libraries. • Server-Client Methodology. • Connection is based on socket communication. • TLMdevice servers can be located anywhere on the network. • Drivers are needed to configure sensor, capture the image from sensor and provide it to the SystemC TLM model. • Data can be easily sent and received to/from during TLM simulation run. • The only tools required to develop such TLM IPs are the free-of-charge open source SystemC 2.0 kernel, C++, GNU compiler & gdb debugger.

  10. ‘C’ API I/F ‘C’ API I/F MFC-Test App 1 2 TLM-device DLL Dataflow of the platform TLMdevice_Sensor Server On Windows I2C Master I/F Imaging TLM Platform TLMdevice_I2C Client on Linux IPC I2C TLM IP Interfaces with the Sensor Board 2 RX I/F TLMdevice_RX Client on Linux IPC RX TLM IP CMOS Sensor Connected with USB Port of PC I/F sending final RGB/YUV image file

  11. Image sent to the display application GDD Frame Imaging TLM Platform TLMdevice_GDD_RGB/YUV Client On Linux TLMdevice_GDD_RGB Server On Solaris IPC Dataflow of the platform TLMdevice_GDD_RGB/YUV Server On Windows O/P TLM IP

  12. TLMdevice demonstrator

  13. TLMdevice Benefits • In our Imaging Framework TLM Models were interfaced with the SMIA complaint CMOS sensor using USB interface. • TLM Model was able to process live streamed images from sensor. • Firmware team appreciated this virtual platform because of its integration with real CMOS sensor and speed.

  14. Results & Conclusions • Significant Time Gain in Product Tape-out. • Successfully validated firmware algorithms like auto white balance, auto exposure with real sensor streamed images much before availability of chip. • Up-to 2 fps frame-rate achieved. • Relying on TLMdevice server-client approach, enables servers to be located anywhere on the network. • Easy Integration of ISS debugger made debugging easy and powerful. • SystemC Transaction level models play a key role in different phases of SOC design cycle like architecture models, golden reference models for functional verification, early availability to act as Virtual Prototype for image quality analysis and close loop validations. Conclusion

  15. Thanks Mamta CHALANA (mamta.chalana@st.com) Tech Leader ST Microelectronics Pvt. Ltd Bangalore

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