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UART and other peripherals

Bindu Jagannatha
Prodigy 210 points

Other Parts Discussed in Thread: OMAP-L137

Hello everyone,

We are trying to find the UART0 and UART1 pins on the OMAP-L137 EVM board. The pin map in the datasheet specifies certain pins, but I am unable to find those pins. Please help!

Thanks,

Bindu

  • 0
    TI__Expert 4760 points

    Hi Bindu,

    The UARTO& UART1 pins are terminated across P12 connector in the OMAP-L137 EVM through 4-Bit 1-Of-2 FET Multiplexer/Demultiplexer.

    Try search for the net name EXP2_UART1_RXD & EXP2_UART1_TXD for UART1 and UART0_TXD_I2C0_SCL & UART0_RXD_I2C0_SDA   for UART0 in the schematics.

    Hope this clarifies your doubt  

    Regards

    Antony

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  • 0 in reply to Antony Samsunil
    Prodigy 210 points

    Antony, thank you for helping.

    Do I need any additional hardware for this? I found a reference to "Mating Daughter Card Connectors".

    (http://support.spectrumdigital.com/boards/evmomapl137/revd/files/EVMOMAPL137_TechRef_RevD.pdf)

    I can see the Daughter Connectors at P12 on the EVM, but do I necessarily need these additional connectors to use UART0 and UART1?

    Bindu

  • 0 in reply to Bindu Jagannatha
    TI__Expert 4760 points

    Bindu,

    Yes of course you need an additional hardware to use UART0&UART1 port. In the OMAP-L137 EVM connectors P12&P13 are used to interface User interface module. Similar kind of board needs to be design in order to make use of the UART signals available at these connectors.

    Only UART2 port connector P1 used in the EVM for user access.

    But do I necessarily need these additional connectors to use UART0 and UART1?

    Yes because there is no options in the board other than that. The only way to tap these signals out is to make use of the connector P12. 

    Regards

    Antony

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  • 0 in reply to Antony Samsunil
    Prodigy 210 points

    Ok thank you Antony!