SPRUJE4D August 2024 – June 2025 F29H850TU , F29H859TU-Q1
The F29H85x device and the PMIC on the controlSOM are connected using SPI bus. The SPI bus is used by the device to configure the PMIC and also, when enabled, to service the PMIC's watchdog. The SPI bus GPIOs are also connected to the SPI standard location on J1, see Table 5-3 for more information. Note that the SPI_STE pin is not connected to any of the baseboard headers.
Care must be taken when using these GPIOs on a baseboard since these GPIOs toggle when the F29H85x device communicates with the PMIC using SPI. It is recommended to always use these pins for SPI function on a baseboard.
| SPI Pin | GPIO | J1 Connection |
|---|---|---|
| PICO | GPIO91 | J1.75 |
| POCI | GPIO92 | J1.77 |
| CLK | GPIO93 | J1.79 |
| PTE | GPIO94 | Not connected to J1 |