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Altera_Forum
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12 years ago

Cyclone V 3v3 pins

Hello, My name is Jonathan, I am new with altera. I have a Cyclone V Development kit. I have connected a 3V3 input (from an UART) in a 2V5 pin (HSMA_D0 (K16)). I am going crazy becau...
Altera_Forum's avatar
Altera_Forum
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12 years ago

I have inserted two registers betwen the input and the state machine and I think that now it works.

I have never used this kind of stages with Xilinx devices. Why do I need it with ALTERA? I want to understand the problem.

I have another input/output three-state pad for an I2C. I have the same problem.

I have inserted two registers between the input signal and the state machine and it has not solved the problem (It works but after a while it crash).

Thanks a lot,

Jonathan.