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Altera_Forum's avatar
Altera_Forum
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13 years ago

Signaltap II shows me incorrect time

Hi all I use both oscilloscope and signaltap II to observe an I2C waveform of 100k. The waveform is fine and I can see correct start/stop condition, address, and data. However, the period o...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Signaltap is taking one sample every clock - 125MHz - so one sample every 8ns.

You almost certainly need to set the 'time unit' to 8ns to match this.