3/2/2023 0 Comments Interface memory procssor![]() Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on, 30(4):473-491, 2011. High-level synthesis for fpgas: From prototyping to deployment. Allocation results from realistic video systems on Xilinx Zynq FPGAs verify the correctness of the model and show that the proposed approach achieves appreciable reduction in block RAM usage. Based on the proposed model and information about the FPGA architecture, we also present an optimization model to achieve allocation memory requirements to embedded memories (Block RAM and Distributed RAM). We used that interface for modeling image processing applications and generating common memory elements. We present an interface, the Component Interconnect and Data Access (CIDA), and its implementation, based on interface automata formalism. ![]() Due to the limited availability of these resources, optimization of memory allocation and the implementation of efficient memory architectures are important issues. Keeping in mind that AMD's Van Gogh APU has not been formally announced and AMD does not comment on unreleased products, so it is impossible for us to get any official details about the processor.Image processing applications are computationally intensive and data intensive and rely on memory elements (buffer, window, line buffer, shift register, and frame buffer) to store data flow dependencies between computing components in FPGA. Only the Celadon is mentioned in the boot log, so we are most likely dealing with a mobile platform. Meanwhile, there are some other Van Gogh platform codenames revealed before, including Celadon (an FP6 mobile platform), Mytle (a desktop AM4 platform), and Artistic (an unknown desktop platform). The development motherboard used to run the Van Gogh APU is codenamed Chachani-VN, but not a lot is known about its specifications. Or, it could actually be an APU with more memory bandwidth and a larger GPU - anything is possible at this point. Most likely it's a 128-bit interface, possibly even a mobile optimized 64-bit interface with LPDDR5. Given the 4-core CPU, we suspect this isn't actually a 256-bit DDR5 interface. ![]() So we're back to square one, and Van Gogh's memory interface remains yet another mystery about this APU. That could also result in the board detecting multiple 16-bit LPDDR5 or 32-bit DDR5 memory channels as several 64-bit DDR4 channels, showing a '256-bit DDR5 interface.' It's possible that a development system could incorrectly detect LPDDR5 as DDR5 (especially with a pre-production BIOS). DDR5 has numerous similarities with LPDDR4 but with a different addressing range than existing types of memory, and LPDDR5 and DDR5 also share similarities. What is somewhat illogical is to use four Zen 2 general-purpose cores with a high-end APU.įrom an operating system point of view the type of memory used by the platform is not very important, which is why there are modern CPUs that can work equally well with DDR4 as well as LPDDR4X. ![]() Meanwhile, if AMD wants to offer a breakthrough graphics performance with an APU, a 256-bit DDR5 interface might be be a logical choice. A 256-bit memory interface is nothing new for high-end desktop CPUs as well as game consoles, but for typical processors for client PCs such a wide DRAM interface is considered an overkill.
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