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Altera_Forum's avatar
Altera_Forum
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13 years ago

DAC with THDB-ADA on DE2-115

Hi there, I'm working with DAC on the daughter board THDB-ADA. The pin assignments are correct, I believe, but the circuit doesn't seem to be working. Here are my waveforms from ModelSim, can so...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

That's why it doesn't work I think. You have disabled ADC channel B already:

ADC_OEB <= '1'; this pis is active low, should be 0.

Can you make another change to your code, this:

SIGNAL clockF, clockR : std_logic;

to this:

SIGNAL clockF, clockR : std_logic := '0';

and display the iCLK_50 in your simulation