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SPI communication using DIO 96

     I am very newbie of labview. Now I have a project is to read the ADC value from IC LTC1867 with using DIO 96. This is my first time to do SPI communication i try to write code to read ADC but I always get low signal.
  Can any one please help me? (I attach the code I write.)

Message Edited by TK Chang on 09-05-2006 09:40 PM

Message Edited by TK Chang on 09-05-2006 09:40 PM

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Hi Chang,

PCI-DIO-96 is a static DIO device and it is the recommended device for I2C Applications. You would need a correlated digital I/O for I2C Applications. In other words, you need board which can precisely correlate data bits with clock.

I would recommend using USB-8451. It has High-level, easy-to-use LabVIEW API. It can act as I2C master interface with clock rates up to 250 kHz which is well with in the range of LTC1867 rate. This would make your programming and interfacing very easy.

For further information, please refer to the following product page.

Hope this helps.

Have a great day!


Kalyanramu Vemishetty
Automated Test Systems Engineer
National Instruments
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Hi Kalyan:


          Thank for advice. I will try it.

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I think it is possible to write SPI code using the DIO-96

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