Create Account
Search
You are here: TDG Forum  >>  Texas Instruments SOMs and Development Kits  >>  OMAP-L138 EVM Development Kit  >>  Can SPI0 be used?

Technical Discussion Group Forum

This forum is provided for user discussion. While Beacon EmbeddedWorks support staff and engineers participate, Beacon EmbeddedWorks does not guarantee the accuracy of all information within in the Technical Discussion Group (TDG).

The "Articles" forums provide brief Articles written by Beacon EmbeddedWorks engineers that address the most frequently asked technical questions.

To receive email notifications when updates are posted for a Beacon EmbeddedWorks product download, please subscribe to the TDG Forum of interest.

TDG Forum

PrevPrev Go to previous topic
NextNext Go to next topic
Last Post 11 Nov 2013 09:18 AM by  Andreas Gschossmann
Can SPI0 be used?
 3 Replies
Sort:
You are not authorized to post a reply.
Author Messages
steven.eckhoff
Basic Member
Basic Member
Posts:192


--
07 Nov 2013 03:26 PM
    Hello,

    the OMAP-L138 SOM-M1 has two SPI ports. I need one SPI port in my design. I do not want to use SPI1, because the system boots from SPI1 by default. I do not want to wait for the Linux System booting, until the bus can be used by the DSP.

    Thus my choice is to use SPI0. The HW Spec of the SOM says, that SPI0_SIMO, SPI0_SOMI and SPI0_CLK are used for communication with the Ethernet PHY on the SOM. If I go without Ethernet PHY, is it possible to use SPI0 for own purposes, by DSP?
    steven.eckhoff
    Basic Member
    Basic Member
    Posts:192


    --
    07 Nov 2013 03:34 PM

    If you are not going to use the PHY and your quantities justify doing a custom SOM, then you can have the SOM manufactured without the PHY. This would be the best way to get access to SPI0. 

     
    Andreas Gschossmann
    New Member
    New Member
    Posts:3


    --
    08 Nov 2013 07:30 AM
    We have small quantities for the SOM in this application. Do I necessarily have to change hardware of the SOM board to use SPI0 port? Which hardware changes do I have to make to be able to use SPI0?
    Andreas Gschossmann
    New Member
    New Member
    Posts:3


    --
    11 Nov 2013 09:18 AM
    We have removed the PHY for now. However maybe it is sufficient to remove the resistances R75, R76 and R77. I will test this also and give a feedback, as soon as I have done this.
    You are not authorized to post a reply.

    Forums Texas Instruments SOMs and Development Kits OMAP-L138 EVM Development Kit