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Hi Yaroslav,
What was wrong with the 74LVC125 on the SiLabs USB-Blaster?
Your board should have already done that, i.e., the VCC_TARGET pin on the USB-Blaster is supposed to power the buffer inside the USB-Blaster. That is how the USB-Blaster ensures the logic levels transmitted to the board are compatible with the device.
If your board did not connect VCC_TARGET, then that would explain the problem.
Cheers,
Dave
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Nothing ! My CPLD board is designed for ByteBlaster so it has 74HC244 on it to protect the CPLD. I tried to connect USB-Blaster to the same connector, but it did not work.
About VCC_TARGET, I didn't know that's why I didn't connect it...
Thank you,
Yaroslav.
Honored Contributor
