DLPU018J October 2014 – June 2024 DLPC900
The DLPC900 does not have a dedicated INIT_DONE signal output to indicate that it has completed its power-up initialization and is ready to accept commands. The user may configure one of the nine GPIOs available as an INIT_DONE signal output simply by adding the GPIO configuration into the default batch file that is executed at power-up. A 10-kΩ pull-down resistor must be connected to the GPIO that is used.
The following is an example of adding the configuration for GPIO_08 to a batch file, where GPIO_08 is configured as an output and the signal is set high. When this command is added to the top of the batch file, the GPIO output goes high in approximately 800 ms from the time POSENSE goes high:
GPIO_CONFIG: 0x8 0x3