https://www.microchip.com/en-us/solutions/data-centers-and-computing/computing-solutions/technologies/espi
Enhanced Serial Peripheral Interface (eSPI) Bus | Microchip Technology
The Enhanced Serial Peripheral Interface (eSPI) is an all-in-one bus that replaces the LPC bus.
serial peripheral interfaceenhancedespibusmicrochip
https://www.mathworks.com/help/raspberrypi/raspberrypi-peripherals-communication-spi.html
Serial Peripheral Interface - MATLAB & Simulink
Communicate with Raspberry Pi hardware using Serial Peripheral Interface
serial peripheral interfacematlabsimulink
https://www.electronicdesign.com/content/article/21186729/power-your-peripheral-from-the-serial-interface
Power Your Peripheral from the Serial Interface | Electronic Design
It's imperative to have efficient power management architectures within the peripheral to meet the power budget.
from theserial interfacepowerperipheralelectronic