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Altera_Forum's avatar
Altera_Forum
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17 years ago

THS8134b : D/A problem

Hi,everyone.

I am using the FPGA board "ALTERA Cyclone EP2C35F672C8N" and trying to display some colors on my monitor through the VGA port.

The problem is there is a D/A chip "THS8134b" on the bord.After reading the datasheet,i still can not understand the function of the signals:sync,sync_t,m1 and m2.

Can someone who has the experience on it help me to understand this?

Is that necessary to assign values for these signals ? or i can just use only r,g,b,h_sync,v_sync,blank to display.

THX.

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    17 years ago

    I'm using the THS8135 on a board solely for the purpose of generating analog sync. It's not exactly the same but similar to the THS8134B. Correct me if I'm wrong but there is no H_sync and V_sync on the DAC right?

    Jake
  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    16 years ago

    Sorry , my mistake ! Just M1 , M2 , SYNC , SYNC_T , and BLANK .

    But I still don't know how they works !

    Can someone help ?