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ADS8556 EVM Board Serial Control

JAYOUNG PARK
Prodigy 10 points
Other Parts Discussed in Thread: ADS8556

 was trying to do the ADS8556 EVM Board  Serial Control.

I would like to know how to set the Software.

with manual,its quite hard to work it out.

And advice me a exact meaning of Hardware Mode and Serial Interface.

Plus, Weather hardware mode is solely implement or Hardware interlocked with Serial Interface.

 

Hope you could offer all my question.

I will wait for your prompt reply.

 

Thank you

 

Best Regards,

  • 0
    TI__Guru**** 180941 points

    Hi Jayoung,

    Software control of the ADS8556 can be realized in either Serial or Parallel mode.  Essentially the difference between the HW and SW modes has to with pin functions (like RANGE/XCLK or WORD/BYTE) versus register settings.  In HW mode, you would need to use a GPIO to control your RANGE setting if you wanted to dynamically switch from 2x to 4x.  In SW mode, you can do that by writing to bits C[27..28].

    Take a look at Table 2 on page 26 of the data sheet and the Software Mode section on page 27 for a general overview of the differences.  The Terminal Functions table starting on page 11 of the data sheet also provides some specific detail on the various options (HDW vs. SW and SER vs. PAR) as well.