write data to Sram and then read to PC

Discussion in 'VHDL' started by sarah, Aug 13, 2003.

  1. sarah

    sarah Guest

    Hi,

    I have a problem when implementing the project in VHDL with Altera
    Apex20ke.

    I nned to write data first to Sram. After finishing writing, read data
    to PC through UART. SRAM is asychronous sram. I assigned pins
    according to the datasheet. And UART works well. The problem is the
    clock difference in writing and reading. the writing clock is 10mhz.
    And reading clock is just uart-clock , much slower than 10mhz.

    Does anybody have freeIP for writing data to SRam and then reading
    them to PC?

    Thank you.

    Sarah
     
    sarah, Aug 13, 2003
    #1
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  2. On a sunny day (13 Aug 2003 08:37:36 -0700) it happened
    (sarah) wrote in <>:

    >Hi,
    >
    >I have a problem when implementing the project in VHDL with Altera
    >Apex20ke.
    >
    >I nned to write data first to Sram. After finishing writing, read data
    >to PC through UART. SRAM is asychronous sram. I assigned pins
    >according to the datasheet. And UART works well. The problem is the
    >clock difference in writing and reading. the writing clock is 10mhz.
    >And reading clock is just uart-clock , much slower than 10mhz.
    >
    >Does anybody have freeIP for writing data to SRam and then reading
    >them to PC?
    >
    >Thank you.
    >
    >Sarah
    >

    Multiplexers in address and data lines of the SRAM.
    Connect SRAM to circuit 1 and write.
    Connect SRAM to circuit 2 and read.
    ?
     
    Jan Panteltje, Aug 13, 2003
    #2
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