Hi Henry, What is the usr_clk on the iBOB if not the ADC Clock? Something you put in on the SMA connectors? Glenn
On 6/7/08, Henry Chen <[email protected]> wrote: > > Hi Glenn, Dave, > > Looks like the clock measuring mechanism is only if you use a usr_clk > input. > It may be tricky to give the adc_clks the same functionality, due to the > way > the ADC clocking infrastructure is done, but it shouldn't be too hard to > have the toolflow conditionally remove the clock measuring software and > gateware if you're not using a user clock. > > Thanks, > Henry > > G Jones wrote: > >> I am also interested in this. I see that the clock measure and reset >> functionality seems to be implemented in >> /pcores/opb_clockcontroller/hdl/user_logic.vhd >> All of the logic in there seems like it should work, but when you look at >> the system.mhs file, the relevant signals are connected to dcm_2 in my case, >> which has its CLKIN signal connected to net_gnd, which explains why it >> always reads 0. It would be great if this could be connected to the ADC's >> DCM, but I don't know how to access that as I don't see it in the mhs file. >> >> Glenn >> >> On 6/5/08, *David MacMahon* <[email protected] <mailto: >> [email protected]>> wrote: >> >> Does anyone use the clkmeasure command on the ibob? It always >> returns... >> >> Clock frequency: 0.0000 Mhz >> Current phase : 0 degrees >> >> ...for our ibobs that are using ADC clock (that is definitely more >> than 0.0000 MHz). Which clock is it supposed to be measuring? If >> it's not used or usable, can we please eliminate it? It takes up >> valuable software space. >> >> Likewise for the "clkreset" and "clkphase" commands. >> >> Thanks, >> Dave >> >> >> >>
