Part Number: DLPD4X00KIT
I have two questions for SetPWRFLOAT function in USB DLL API.Do anyone know this issue?
I thought that executing SetPWRFLOAT function is equal to issuing "DMD Park Request",but I realized the DMD does not stay in park state unless both of them are executed.Like this. Is it correct procedure?
// DMD Block Operations -- DMD Park Request
SetBlkMd(3, deviceNumber); // BLK_MD=2'b00
SetBlkAd(12, deviceNumber); // BLK_AD=4'b11xx
In DLPU039a at 6.2.20 section, it describes "Active=1, inactive=0".But, as far as I tried my own C++ code, the DMD shows park state behaviour when SetPWRFLOAT(0, ..).What I say "park state behaviour" means the same behaviour as pushing DLPDiscovery4100 board's SW3.And I'm checking the DMD by watching its surface directly with my eyes.
Hello again Goro,
Yes they are different. The first method (i.e. Park request) is recoverable by sending a reset operation which will resume normal operation. PWRFLOAT (either the command or the switch (SW3) prepares for shutdown and is not recoverable without doing a full logic Reset (i.e. powering down or pulling the RESET_Z of the controller).
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In reply to Fizix:
Hi Fizix, thank you for your reply.I understand that SetPWRFLOAT function and SW3 are the same behavior.
Can I ask another question here?Before power down the DLPDiscovery4100 board, Does SetPWRFLOAT function have to be executed? Or, is only issuing "Park request" enough?
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