Hi Kaushal, cc. CASPER, All good here (Berkeley), thanks. Hope you are well too.
It's been a long time since I've used that ADC, but from what I remember... - Yes, you need to appropriately drive the ADC's reset through the jumper. If things aren't working and you're debugging with a probe, note that this reset is active low. - the yellow block uses GPIO[0] for the ADC's reset. On ROACH, you had the choice between gpio banks A and B. On ROACH2, this option on the yellow block doesn't do anything. - If you're using the SPI interface, the yellow block uses GPIOs 1,2,3 for data, clk, and cs_n, respectively. - The ADC reset is controlled by the active high reset input on the yellow block, which is inverted and drives GPIO[0]. I suggest tying this to a software register. There are more details at https://casper.berkeley.edu/wiki/X64_adc Don't forget there's some link calibration stuff you need to do -- details are on that wiki page. Let me know if you have other questions, Cheers Jack On Wed, 8 Jun 2016 at 06:07 Kaushal Buch <kaushal.b...@gmail.com> wrote: > Dear Jack, > > Hope you are doing good. > > We have recently purchased 64-channel ADC boards and are planning to use > them with ROACH-2. We have a basic design developed for packetizing the > data and sending it on 10GbE port. > > I have gone through the available literature for this on the internet. > However, I need some additional confirmation with reference to the > 64-channel ADC board: > > 1. Is it mandatory to reset the ADC through jumper ? If yes, which pin > should it be connected to on the ROACH-2 board ? > > 2. Can we reset the ADC via software register or GPIO ? In this case, how > to configure the GPIO ? > > > > Thanks & Regards, > > Kaushal >
