Other Parts Discussed in Thread: ADC3683
Tool/software:
I use the ADC eval board (ADC3683EVM).My plan had been to use the control program provided by TI (ADC35XXEVM GUI, as laid out in "sbau360.pdf" user guide). I require the use of the 20-bit 2-wire mode available on ADC3683. However, the control program only gives options 14, 16 and 18 bits. So, I have a couple of questions:
1) Is there another ready-to-use control program provided by TI (or a 3rd party) that gives access to the full range of features of ADC3683? Perhaps I can gain access to the source code of the program so we could ourselves add features that we need?
2) (in case there isn't another GUI-based program) It appears that the control program operation behind the scenes is simply a collection of register reads and writes over USB, so perhaps you can point me to a piece of software (again, from TI or in public domain) that would provide a simple register read/write interface (over USB using the on-board FTDI chip) compatible with the ADC3683EVM? I imagine that internally to TI you guys must have something to access the full set of features of your ADCs installed in eval boards (?).
3) The GUI program provides an option to load a Python file, but there is no mention of this functionality in the user guide. I imagine this feature may allow a general control over the ADC functions, but I'd need to know the nature of the Python script the program accepts. For example, can it just be a list of "reg_write" and "reg_read" operations, and, if so, it would be nice to have the description of the python libraries available to the user and how to use them. There is also a "register read" and "register write" boxes. Can they be used to augment the settings not otherwise available through the GUI selection menus?
3) The GUI program provides an option to load a Python file, but there is no mention of this functionality in the user guide. I imagine this feature may allow a general control over the ADC functions, but I'd need to know the nature of the Python script the program accepts. For example, can it just be a list of "reg_write" and "reg_read" operations, and, if so, it would be nice to have the description of the python libraries available to the user and how to use them. There is also a "register read" and "register write" boxes. Can they be used to augment the settings not otherwise available through the GUI selection menus?
4) phasing of FCLK with respect to the "previous sample" and "current sample" is not clear from the ADC3683 user guide: when performing de-serialization in the receiving device, is there an assumption that FCLK is high during the "previous sample" and low during "current sample" (or vice versa)? Otherwise, how can the received serial bit values be correctly mapped back to the original parallel binary sample values?
