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TPham24's avatar
TPham24
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6 years ago

Time synchronization issues between UART and SRAM

Hello. I have a problem between UART and SRAM. I have top module, Controller SRAM, UART module and other components. When I sent 1 byte data from PC to FPGA to save to SRAM. The data is not saved i...
GuaBin_N_Intel's avatar
GuaBin_N_Intel
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6 years ago
What does you mean "The data is not saved immediately, but after 3-6 clicks, send it to SRAM"? How did you measure the number of clock needed to write into memory? Is the time taken within the SRAM controller or in the interface between UART & SRAM?
  • TPham24's avatar
    TPham24
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    6 years ago

    I receive data via UART from my computer by oversampling scheme to estimate the middle points of transmitted bits and then retrieve them at these points accordingly.

    So I can't measure the number of clock needed to write into memory since no clock infomation.

    My SRAM Controller can read/write data according to enable clock.

    I don't know how to sync between UART and SRAM.

    And i only use Verilog HDL.

    I need high frequency to be able to control the axis of cnc machine. Embedded system can satisfy high frequency?

    You have any ideas?