I just bought a CDCE72010EVM evaluation module for the CDCE72010 device.
I need to generate an LVCMOS output between 0 V and 3.3 V (or at least 0-1.5 V) to clock a design implemented in an Actel ProASIC3 FPGA, on a commercial board (ProAsic3 Evaluation Board).
How shall I do?
I can only generate LVCMOS outputs between -800 mV and +960 mV (with a divider of 80).
I use USB to power up the evaluation module and, if I try external 3.3V power, I cannot generate any clock.
So, I enable 'EVM power' in the control GUI, select USB power on the board and select, by the control GUI, LVCMOS level on output 2 with a divider of 4'. The other parameters are default. I get a clock of about 120 MHz between -440 mV and 520 mV.
If you need more information about my test I'm ready to provide anything, only I need to know what ;-)
Thank you in advance!
Sorry for the delayed response! It looks like the board is set for LVPECL mode and you are measuring the signal after the AC capacitor on the output. You need to probe on the signal before the output capacitor to see the right DC level and change the output type to LVCMOS.
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