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Joseph_Wilger's avatar
Joseph_Wilger
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3 months ago

10AX027E3F29E2SG Pin AB19 voltage (IO-AB19 / LVDs2J)

Pin AB19 has a low voltage. A good board has proper voltage waveform (1.8 Vdc high, and ≤ 0.3 Vdc low). This is a waveform amplitude of 1.5 volts difference (1.8 Volt rail).
Fpga Devkit
FvM's avatar
FvM
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3 months ago

Hi,

why are you starting a new thread instead of continuing the previous one? https://community.intel.com/t5/Programmable-Devices/Unexpected-Voltage-output-on-pin-AB19/m-p/1711288

Anyway, now we know at least about used device. Still not clear how the pin is connected in your circuit? How much pull-down current is required by the external circuit to achieve expected 0V level? A schematic would be preferred for explanation. Is it an off-the-shelf development kit or your own design? Which I/O standard is configured for the pin?

Regards
Frank

Joseph_Wilger's avatar
Joseph_Wilger
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3 months ago

1. why are you starting a new thread ... I was unable to navigate my browser back to the original thread. There was also no eMail link I could use.

2. Still not clear how the pin is connected in your circuit? How much pull-down current is required by the external circuit to achieve expected 0V level? See below.

3. A schematic would be preferred for explanation. I am unable to share the schematic - without and NDA in place. Certainly not on an open forum like this.

4. Is it an off-the-shelf development kit or your own design? Our own design.

5. Which I/O standard is configured for the pin? I will check.