FM4 Highspeed SPI

[gerhard_egg]

We use the SPI (SCK0_1, SOT0_1 & SIN0_1) interface of the controller. (MB9BF564L) Is this the High-Speed-Interface by Hardware or does it need some Firmware configurations? It's not clear, whitch timing we can use:

- Synchronous serial (SPI = 0, SCINV = 0) or
- High-speed synchronous serial (SPI = 0, SCINV = 0)
The ChipSelect is done with an GPIO and controlled by Firmware.

[ChaoHaiM_11 · Accepted solution]

Hi Gerhard_egg,

To implement HS-SPI function, the FW only needs to set the baud rate to what you want (<20Mbps).
At the same time, pay attention to the external load capacitance.