DLPC3478: HOST_IRQ not sets to low

Maxim Galkin41

Part Number: DLPC3478
Other Parts Discussed in Thread: DLP3010, , DLPA2005

Hi,
We made custom board with DLPC3478+DLPA2005+DLP3010 chipsets. We used W25Q32FVSSIG flash memory. We programmed flash memory with firmware DLP3010EVM-LC-FW which downloaded from site: www.ti.com/.../DLP3010EVM-LC.
When PROJ_ON signal sets to high:
- power supplies (+1,1V, +1,8V, +3,3V) sets to nominal votages;
- RESETZ signal sets high after 10 ms;
- HOST_IRQ signal sets high after RESETZ;
- 24MHz reference clock for DLPC3478 make stable after power-up after 5 ms.
I attached screenshots from oscillospoe.

I have a problem: why HOST_IRQ not sets to low?

Regards, Maxim

over 5 years ago

0 Philippe Dollo over 5 years ago

TI__Mastermind 28005 points

Maxim,

Thanks for your thorough report of the issue.

Have you tried communicating with the EVM via the provided GUI software? If so, what response (if any) do you get? The GUI is available on this page:

https://www.ti.com/tool/DLP3010EVM-LC

Regards,

Philippe Dollo

0 Maxim Galkin41 over 5 years ago in reply to Philippe Dollo

Intellectual 425 points

Hello, Philippe
I2C0 interface used for communication with GUI. I2C interface will not activate before HOST_IRQ will be set to low level(see DLPC3478 datasheet Fig.34).

Regards, Maxim Galkin

0 Maxim Galkin41 over 5 years ago in reply to Maxim Galkin41

Intellectual 425 points

May be it's will be useful:

I thinks, that ASIC auto-initialization failed.

0 Philippe Dollo over 5 years ago in reply to Maxim Galkin41

TI__Mastermind 28005 points

Maxim,

There is an MSP430 on the board which operates independently of the I2C interface on the EVM. As such, there may still be parts of the GUI that function (through the MSP430). How does it behave?

0 Maxim Galkin41 over 5 years ago in reply to Philippe Dollo

Intellectual 425 points

Hello, Philippe

GUI work's without mistakes. I have only one message: power-off, but this is because HOST_IRQ not sets to low. I can to program flash memory, send commands via I2C but didn't saw answers from DLPC.

I saw a few commands, which sended DLPC3478 to DLPA2005 via SPI1 nterface. I attached a few pictures.