SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
To achieve the maximum rated speeds, the following settings must be made. This example assumes that the device is operating at 100MHz.
Select the appropriate Pin Mux options in GPIO_CTRL_REGS.
During the SPI configuration procedure:
Set HS_MODE to 1.
SpiaRegs.SPICCR.bit.HS_MODE = 0x1;
Set SPIBRR to 3. SPICLK = SYSCLK/(SPIBRR+1) = 25MHz
SpiaRegs.SPIBRR = 0x3;
There are no other differences in the configuration from normal SPI operation. Sending and receiving data, RTDMA operation, and interrupts operates without change.