• State TI Thinks Resolved
  • Locked Locked
  • Replies 1 reply
  • Answers 1 answer
  • Subscribers 46 subscribers
  • Views 320 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADS8332: SPI interface

Roee Kimchi
Prodigy 120 points
Part Number: ADS8332
Other Parts Discussed in Thread: ADS8168

Hi, I am trying to communicate with ADS8332 SPI interface. I saw at the datasheet a reference to an output data register (ODR), but didn't see an address or how can I get an access to it.

my question is, is there some kind of an output register which I can read from the data of the SDO, and an input register to write data to the SDI?

thanks! 

  • 0
    TI__Mastermind 46580 points

    Hello Roee,

    The ADS8332 has a single configuration register and a single output register.  All commands except READ CFR output the latest conversion result on SDO.

    9.5.2.1 Configuring the Converter and Default Mode

    The communication protocol of the ADS833x is full duplex. That is, data are transmitted to and from the device simultaneously. For example, the input mux channel can be changed via the SDI pin while data are being read through the SDO pin. All commands, except Read CFR, output conversion data on the SDO pin. If a Read CFR command is issued, the Read Data command can then be used to read back the conversion result.

    TI has a newer device, the ADS8168, that includes an internal reference and buffer, and typically will provide better performance.

    Regards,
    Keith Nicholas
    Precision ADC Applications