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Altera_Forum
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13 years ago

100 pF filter capacitor on TMS programming pin

Hello everybody, Alter reccommends the use of a 10k pullup resistor to VDD on the TMS JTAG pin to keep the input at VDD when in ioperational mode. We are also considering a 100pF capaci...
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Altera_Forum
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13 years ago

The pull-up resistor is necessary but if you add a capacitor too, it’ll help you reduce the spikes but will not give you the ideal result. I tried it on my Virtex-II board, it did reduce the spikes but it didn’t give me a very reliable 100% result.

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