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Discussion Groups | TMS320C54x | not quite DSP, but I need help!
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).
not quite DSP, but I need help! - mdl8736 - Jul 17 21:12:00 2002
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Hi all, I have an ADC eval. module that requires Panasonic 0-ohm surface mount "resistors" to connect the on-chip clock (ADC) to the output buffering circuitry. (1) What is a 0-ohm resistor? I'm guessing it's just a high- reliability connector for surface mount apps. Could I just solder a short piece of wire or metal and accomplish the same thing that these 0-ohm "resistors" accomplish? (2) The distributors I've contacted say they don't have the part number that TI calls out on the BOM. I've contacted TI about this matter, but I thought that somebody here (C54x newsgrp) might know what I'm babbling about! Thanks, Mike |
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Re: not quite DSP, but I need help! - Jeff Brower - Jul 18 11:47:00 2002
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Mike- > Hi all, I have an ADC eval. module that requires Panasonic 0-ohm > surface mount "resistors" to connect the on-chip clock (ADC) to the > output buffering circuitry. > > (1) What is a 0-ohm resistor? I'm guessing it's just a high- > reliability connector for surface mount apps. Could I just solder a > short piece of wire or metal and accomplish the same thing that these > 0-ohm "resistors" accomplish? NO! Don't! Then you will have a polyphasic, correlative impedance mismatch. Plus capacitance will skyrocket all over your board. Just kidding ;-) Of course you can solder a wire. Nice that I got to this one first this morning. Jeff Brower DSP sw/hw engineer Signalogic > (2) The distributors I've contacted say they don't have the part > number that TI calls out on the BOM. I've contacted TI about this > matter, but I thought that somebody here (C54x newsgrp) might know > what I'm babbling about! > > Thanks, > Mike |
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Re: not quite DSP, but I need help! - phil black - Jul 18 12:35:00 2002
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You could use a bit of wire or a small value resistor..actually a small reistor(10-200) may be better because it may help with overshoot on the clock line but it is probably not an isssue. Phil --- mdl8736 <> wrote: > Hi all, I have an ADC eval. module that requires > Panasonic 0-ohm > surface mount "resistors" to connect the on-chip > clock (ADC) to the > output buffering circuitry. > > (1) What is a 0-ohm resistor? I'm guessing it's > just a high- > reliability connector for surface mount apps. Could > I just solder a > short piece of wire or metal and accomplish the same > thing that these > 0-ohm "resistors" accomplish? > > (2) The distributors I've contacted say they don't > have the part > number that TI calls out on the BOM. I've contacted > TI about this > matter, but I thought that somebody here (C54x > newsgrp) might know > what I'm babbling about! > > Thanks, > Mike > > > _____________________________________ __________________________________________________ |
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Re: not quite DSP, but I need help! - Joel Ironstone - Jul 18 20:29:00 2002
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Mike:
Surface mount 0 ohm resistors are just wires with the same package as a resistor. I think all resistors on the TI boards are 0805 size. You could use a wire, but it is sort of a pain to solder a wire onto a little SMT pad. Try CRCW08050000ZRT1 From VIshay-Dale at Newark (www.newark.com) Newark PN:36C9353 Hope this helps. (they are 3 cents each or something.) Joel Message: 1 > Date: Wed, 17 Jul 2002 21:12:13 -0000 > From: "mdl8736" <> >Subject: not quite DSP, but I need help! > >Hi all, I have an ADC eval. module that requires Panasonic 0-ohm >surface mount "resistors" to connect the on-chip clock (ADC) to the >output buffering circuitry. > >(1) What is a 0-ohm resistor? I'm guessing it's just a high- >reliability connector for surface mount apps. Could I just solder a >short piece of wire or metal and accomplish the same thing that these >0-ohm "resistors" accomplish? > >(2) The distributors I've contacted say they don't have the part >number that TI calls out on the BOM. I've contacted TI about this >matter, but I thought that somebody here (C54x newsgrp) might know >what I'm babbling about! > >Thanks, >Mike |
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Help for UART DSP driver - Jagdish prasad - Jul 20 9:43:00 2002
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Hi All, I am working on EVM C54XX spectrum digital board equipped with TMS320VC5410PGE DSP processor. I am using code composer studio 2.1 v. DSK library is given with development tool for DSK 5402. In DSK 5402 UART is mapped at 4000h of I/O page. But UART on C54XX evm is mapped at 0h of I/O space. So i can use UART driver available with DSK 5402. Where i can get sample driver for UART for EVM C54XX board. I will be thankfull. Thanks and regards. |
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