DLP5530Q1EVM: DLP5530Q1EVM HDMI interface no response when connect to the computer

Jianyong Luo

Part Number: DLP5530Q1EVM

Hi，TI Team！

We made our own PCB based on DLP5530Q1EVM main board whicih named DLP033B dlp553x evm controller, in our board,we just modified the DMD interface with a FPC cable terminal.

I test our board,DMD projector is ok,but HDMI interface no response when connect to the PC.

when I used DLP5530Q1EVM main board ,the PC can automatic identification when connected to PC,but our board cann't.

In the schematic diagram as below, the component U506 I used M24C02-DRMF3TG/K , and TI DLP5530Q1EVM main board used AT34C02D-MAHM-T, I guess.

The DVI receiver chip is TFP401AIPZPRQ1.

So,what's the problem with this situation? And how can I check it?

Thank you!

8 months ago

0 Ross Schneider 8 months ago

TI__Expert 3285 points

Hello -

Have you programmed the EDID PROM with a binary file? See attached instructions and binary file.

Customer DLPC230 and TPS99000 Fresh PCB Start Up Procedure.docx DLPC230_EVM.bin

The third-part contractor who manufactures and assembles the PCBs of our EVMs performs the programming of the DLPC230 flash part and EDID EEPROM. Refer to steps 3.1 and 3.5 of the attached “…Start Up Procedure.docx” which we provide to the contractor. So the EVMs are pre-programmed when they are sold. For a new design, we’d recommend similar steps. For the EDID, there are a couple ways to do this: TI uses a Devasys USB-to-I2C board plus a custom-made I2C-to-HDMI adapter board, but there are probably other solutions available.

The DLPC230 comes with a built-in bootloader which means the flash can be empty on the first start-up, and then you can use the TI Control Program to program the device.

Regards,

Ross

0 Jianyong Luo 8 months ago in reply to Ross Schneider

Prodigy 70 points

Ok, I'll follow your instructions and see if it works，thank you!

0 Ross Schneider 8 months ago in reply to Jianyong Luo

TI__Expert 3285 points

Keep us updated!

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DLP5530Q1EVM: DLP5530Q1EVM HDMI interface no response when connect to the computer