Use external clock for ADC
Posted: Tue Jul 11, 2017 6:09 pm
Hi,
I have two RPs running in a synchronized fashion as in [1]. The master RP gets its clock from the ADC crystal and forwards it via the daisy chain connector to a slave RP. I need to acquire two signals on both master and slave from the high speed ADCs. For a synchronized aquisition, I need to replace the ADC crystal clock on the slave RP with my synchronized clock. I found [2], stating that for an ADC clock directly coming from the FPGA I need to move R25,R26 to location R27,R28. Before heating the soldering iron, I would like to check with you guys if this is correct. Plus, I need a hint which constraints have to be changed and what should be changed in the block diagram.
Cheers
Jonas
[1] https://www.koheron.com/blog/2016/11/29 ... ya-cluster
[2] https://redpitaya.readthedocs.io/en/lat ... xtADC.html
I have two RPs running in a synchronized fashion as in [1]. The master RP gets its clock from the ADC crystal and forwards it via the daisy chain connector to a slave RP. I need to acquire two signals on both master and slave from the high speed ADCs. For a synchronized aquisition, I need to replace the ADC crystal clock on the slave RP with my synchronized clock. I found [2], stating that for an ADC clock directly coming from the FPGA I need to move R25,R26 to location R27,R28. Before heating the soldering iron, I would like to check with you guys if this is correct. Plus, I need a hint which constraints have to be changed and what should be changed in the block diagram.
Cheers
Jonas
[1] https://www.koheron.com/blog/2016/11/29 ... ya-cluster
[2] https://redpitaya.readthedocs.io/en/lat ... xtADC.html