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Thread: How to connect 16550 UART to Avalon interface when adding component to SOPC builder

  1. #1
    Join Date
    Jun 2007
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    Default How to connect 16550 UART to Avalon interface when adding component to SOPC builder

    Hi

    I am trying to add the 16550 UART from opencores.org which uses a wishbone interface http://www.opencores.com/projects.cg...16550/overview
    to SOPC builder, but I am not sure how to attach some of the signals to the Avalon interface. Does anybody know how to add the following signals:

    - STB_I : input signal to the UART (Specifies transfer cycle)
    - CYC_I : input signal to the UART (A bus cycle is in progress)
    - ACK_O : output signal from the UART (Acknowledge of a transfer)

    The () is the description of the signals from the documentation.

    Have anybody tried to add this component to SOPC builder or know how to add these signals? If somebody has the *_hw.tcl file for the component and I could have a copy of it it would be even better.

    My email is teilersen@hotmail.com

    Thanks

    Best regards

    Tom
    Last edited by teilersen; March 24th, 2008 at 09:47 AM.

  2. #2
    fischer Guest

    Default Re: How to connect 16550 UART to Avalon interface when adding component to SOPC build

    Hello,
    try this, I've connected it to avalon some time ago and as I remember this worked.

    wb_stb_i => chipselect
    wb_cyc_i => chipselect
    wb_ack_o => waitrequest_n

    attached complete ptf

    regards

  3. #3
    Join Date
    May 2008
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    Default Re: How to connect 16550 UART to Avalon interface when adding component to SOPC build

    Can someone tell me how to connect the other signals?
    i tried some functions but i doesn't look like it is working ;(

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