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Connecting DLP Discovery 4100 to a 5V Trigger

Mostafa ElShinawy
Prodigy 30 points
Other Parts Discussed in Thread: ALP, DLPC200, DLPC300

Hello,

I have a DLP Discovery 4100 Developer Kit and I am trying to set up a communication between it and a measurement device through the Multipurpose I/O connector. However the measurement device sends a signal of 5V while the DLP board accepts an input of 2.5V. So I was wondering if there is a standard schematic of a circuit that I could connect to the DLP board and the measuring device, so that it would deliver the desired 2.5V to the DLP board as well as to act as a fail-safe so that in the case of over voltage (or current for that matter) the ALP is not destroyed.

Mostafa

  • 0
    TI__Guru 54320 points

    Hello Mostafa,

    The ALP is a 3rd party product made by ViALUX in Denmark.  You will need to contact them with questions about the ALP products.  Here is a link to their website:

    http://www.vialux.de/

    I hope that will help get you going.

    Fizix

  • 0 in reply to Fizix
    Prodigy 30 points

    Ok, to clear things out, am I not eligible for any kind of support from TI, or are there cases where I can get support?

  • 0 in reply to Mostafa ElShinawy
    TI__Guru 54320 points

    Mostafa,

    There are definitely cases where you can get support.  In this particular case (for the ALP) the FPGA code is the implementation of ViALUX, so that we do not know how they defined the Virtex 5 LX50's I/O's.  Since this part is their IP we directed you to them.  Also the D4100 evaluation kits are sold through and supported by our Design Houses, so that they are the first point of contact for support on the Discovery 4100.

    We provide support for chipset questions for the DLPC200 and DLPC300 (Pico).  If, however, you need design services, then we will again direct you to a Design House, since they are experienced in designing DLP based systems.

    For Voltage Translation, you may want to take a look at the following TI document:

    http://www.ti.com/general/docs/lit/getliterature.tsp?literatureNumber=scea040&fileType=pdf  (see the additional references at the end of the document also)

    Fizix