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Discussion Groups | TMS320C54x | turn off the DC filtering of the codec of DSK5402
Technical discussions about the TI C54x DSPs (including the c5401, c5402, c5402a, c5404, c5407, c5409, c5409a, c5410, c5410a, c5416, c5420, c5421, c5441, c549, c5470 and c5471).
turn off the DC filtering of the codec of DSK5402 - cheto2001es - Oct 10 21:51:00 2002
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Hi Everybody! i have a trouble: i am trying to use the audio codec of the board, but it has an analog stage before the codec (50ad) that eliminates DC (i see on the schematic "5402_DSK_schem.pdf"). If i need this DC, it would work if i short-circuit the capacitors. This also is present in the other sense (output). if i want to send out a signal with DC component, may i short-circuit the caps too? Thanks a lot |
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Re: turn off the DC filtering of the codec of DSK5402 - Jeff Brower - Oct 11 14:14:00 2002
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Cheto- > Hi Everybody! i have a trouble: i am trying to use the audio codec of > the board, but it has an analog stage before the codec (50ad) that > eliminates DC (i see on the schematic "5402_DSK_schem.pdf"). If i > need this DC, it would work if i short-circuit the capacitors. > This also is present in the other sense (output). if i want to send > out a signal with DC component, may i short-circuit the caps too? I think it will work; except I think there is more than one cap on both input and output sides that you need to deal with. I believe that one of our engineers had to do a similar thing last year for a customer. Please let me know if it works for you. Jeff Brower DSP sw/hw engineer Signalogic |
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