Two ps/2 ports and a FPGA

[clros]

Hi,

I would use 2 ps/2 (mini din 6 pin) ports with only one FPGA.

The signal "clock" can be the same for the two ps/2 ports? Can I drive the pins 5 of ps/2 connector with only one FPGA pin?

 

[KlausST]

Hi,

I don't know. And because of this I'd look into the specifications.
Mainly:
* What voltage levels and drive strength is specified for the PS/2.
* then the FPGA datasheet: is the FPGA able to drive one ... or maybe even two PS/2 in parallel.

Klaus

 

[FvM]

PS/2 data and clock lines are 5V level open collector signals (similar to I2C). Can't share clock between two ports, need to provide level converters for 3.3V FPGA IO.

 

[clros]

PS/2 data and clock lines are 5V level open collector signals (similar to I2C). Can't share clock between two ports, need to provide level converters for 3.3V FPGA IO.

Can you tell me some circuit to do it?