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DLPC3439: DLPC3439 HOST_IRQ

Part Number: DLPC3439
Other Parts Discussed in Thread: DLP4710, , DLPA3005, DLP4710EVM-LC, DLPC3479

1)The system is dlp4710 + dlpc3439 + dlpa3005. When the LED is not connected, the test finds that the host_irq signal is always high. Other signals of test 3439 are normal. Is it related to the led not connected? Can the led not be connected be used normally? Test reset as high according to the time sequence?

2) After dlpa3005 is powered on, it is found that the power supply of DMD has no output. Do you need to configure any registers? Other small power supplies 1.1V, 1.8V, 2.5V, 3.3V and other normal output.

3) Does dlpc3439 have startup mode selection? In a document, we found an ext? Boot? En, but we didn't find the hardware pin? Is it a register? Nor found