ZHCSOH4A July 2021 – August 2021 DLPC1438
PRODUCTION DATA
The SPI pins of the flash can directly be driven for flash programming while the DLPC1438 controller I/Os are tri-stated. SPI0_CLK, SPI0_DOUT, and SPI0_CSZ0 I/O can be tri-stated by holding RESETZ in a logic low state while power is applied to the controller. The logic state of the SPI0_CSZ1 pin is not affected by this action. Alternatively, the DLPC1438 controller can program the SPI flash itself when commanded via I2C if a valid firmware image has already been loaded and the controller is operational.