The protocol described in version 1 of the datasheet didn’t work, at all. The button pad’s SPI signals are described as they relate to the on-board microcontroller, which is opposite the usual ...

At 35 MHz, it can’t even switch the line fast enough to produce any signal at all. If you’re sending a command to an SPI slave and expecting an answer that never comes, double-check that the ...

The SPI IP is a fully configurable SPI master/slave device, which allows you to configure polarity and phase of serial clock signal SCK. It enables the microcontroller to communicate with fast serial ...