Resetting Snickerdoodle from an expansion board.

[David M]

Hello, I'm working on a carrier board for Snickerdoodle and I'd like to add a reset button.

On Snickerdoodle's connector J2 There are two pins: "MCU_nRST" and "Zynq nRST"

"MCU_nRST" connects to the "MCU_NRST" of the MCU (through a buffer)

"Zynq nRST" connects to "PS_SRST_B_501" of the Zynq chip (through a buffer)

Which signal should I use to reset the CPU it seems as though the reset for the Zynq chip is the correct but I'm concerned that there may be some sort of power sequencing the MCU performs that I'm not aware of.

Thanks for any help

Dave

[weath...@krtkl.com]

Hi David,

For the application you are describing I recommend that you assert J2.19 (Zynq nRST) low with your reset pushbutton.

-Jamil

[David M]

Thanks for the reply, sorry for the late response