DLP4710LC: Custom board based on DLP4710LC with dual DLPC3479 and DLPA3005.

Hello Amedeo,

The person familiar with this platform is out of the office today, but is returning tomorrow.  I have assigned this inquiry to them.

Fizix

Hello Amedeo,

I will have to test this. Please give me some time to test this for 8.4.0.

The official EVM utilizes DMD Pin mapping Option 2. You can make your own board and follow pin mapping Option 1 as I assume you have done.

The Firmware Selector Tool should have all the variations of the latest firmware and should be followed for any solutions. The updates are after bugs have been fixed and additional features are added, I unfortunately have not tested the the latest solution of your combination and will have to do so soon.

If you are able to get 8.3.0 to work, I would recommend to continue your evaluation using the Pattern Sets you plan to use in your application. I'm sorry I can't tell your application.

Best,

Aaron

Hi Aaron Black,

thanks for your feedback.

It's no problem to adapt to the 8.3 option instead of the 8.4.
For now the most blocking thing is that neither of them works on my board.

What can I check to understand what blocking state my board is in? why at the output of the DLPA3005 we see the DMD supply voltage at 0V?

thanks for your help

Best,

Amedeo

Hello Amedeo,

Sorry I did not ask this earlier, where are you located? 

Could you share a scope capture of the system power-up sequence? This would be the:

1. System Power (12V)
2. 5V Power Supply (preferably near the PMIC DLPA3005)
3. 2.5V Power Supply (preferably near the PMIC DLPA3005)
4. Project On (GPIO_08 from Primary ASIC also preferably near the DLPA3005)

Best,

Aaron

Hi Aaron,

we are located in Switzerland.

System Power is 19V.

As reported on the DLPA3005 datasheet: "The output capacitors of those LDOs should be 2.2 μF for the 2.5-V LDO, and 4.7 μF for the 5-V LDO, pin 91 and 92 respectively."

I share the capture of the power-up sequence.

yellow     SYSPWR
blue     PROJ_ON
purple     SUP_5P0V
light blue    SUP_2P5V

SUP_5P0V and SUP_2P5V rise to a precharge level with SYSPWR, and reach the full level potential after PROJ_ON is pulled high (4 seconds after SYSPWR my MCU raise PROJ_ON).

thanks for your support

Hello Amedeo,

Thank you for providing those so quickly!

I need to discuss with my team shortly and I'll get back to you soon.

Thank you for your patience!

Best,

Aaron

Hello Amedeo,

I think I'll need to take a look at the design more in depth. Could you accept my connection and we'll take this offline.

If there are updates I'll come back to this.

Best,

Aaron

Hello Aaron,

Sure I will accept your connection but what exactly do I need to do?

Best

Amedeo

Hello Amedeo,

I'll reach out to your further through private message. Thank you!

Again, I'll keep this open to trace resolution after we come to a conclusion.

Best,

Aaron