AM625: Converting LVDS Display Output to RGB for AM625 SBC

sumAN HU

Part Number: AM625
Other Parts Discussed in Thread: DS90CF384, DS90CF384A

Tool/software:

I recently purchased an SBC board based on the AM625 processor (www.ti.com/.../AM625, which provides display output in LVDS format. However, I do not have an LVDS display.

I want to design a custom PCB to convert the LVDS signal to RGB format so that it can interface with a standard RGB display. For this, I plan to use the DS90CF384 CONVERTER THAT CONVERTS LVDS-to-RGB.

Is it possible to achieve this conversion? If so, how should I design the connections between the SBC board, DS90CF384 converter, and the RGB display? Additionally, are there any important considerations regarding signal integrity and power requirements?

I would appreciate any guidance or reference designs for this implementation.

Thanks in advance!

hints: if I use MICRO TIPS USA 13-101HIEBCAF0-S RGB Display

Thanks!

AM625:https://www.ti.com/lit/gpn/am625

5 months ago

0 Paula Carrillo 5 months ago

TI__Mastermind 38820 points

Hi, I will send this thread to a colleague. In the meantime, from other E2E's and FAQs it seems possible. Few links below for your reference.

Display Interfaces: A Comprehensive Guide to Sitara MPU Visualization Designs (Rev. A)

[FAQ] AM625 / AM623 / AM625SIP / AM625-Q1 Custom board hardware design – Display Parallel Interface (DPI) 24-bit RGB - Processors forum - Processors - TI E2E support forums

Thank you,

Paula

+1 Kallikuppa Sreenivasa 5 months ago in reply to Paula Carrillo

TI__Guru**** 188679 points

Hello Suman Hu,

Thank you for the query.

sumAN HU said:
DS90CF384

Please start a new thread with the device title and OLDI to DPI and check with the relevant PL if the device support the conversion.

sumAN HU said:
I would appreciate any guidance or reference designs for this implementation.

I am not aware of a solution that i can suggest.

Let me check internally and update with any additional information i may receive.

Regards,

Sreenivasa

0 sumAN HU 5 months ago in reply to Kallikuppa Sreenivasa

Prodigy 90 points

If you come across any solution, please feel free to suggest it to me.

0 Kallikuppa Sreenivasa 5 months ago in reply to sumAN HU

TI__Guru**** 188679 points

Hello Suman Hu,

Thanks. Will do.

Regards,

Sreenivasa

0 sumAN HU 5 months ago in reply to Paula Carrillo

Prodigy 90 points

@paula carrillo Figure 1 shows the schematic I have designed, while Figure 2 represents the reference schematic I followed. The AM625 EVM board provides an LVDS output using the OLDI interface.

My question is: What is the function of the TS_INT# and OLDI_RESETn pins on the EVM board? (Refer fig.2)

If I do not connect these two pins while converting LVDS to RGB using the DS90CF384A converter, will it still work?(refer fig. 1) Regards.

0 Kallikuppa Sreenivasa 5 months ago in reply to sumAN HU

TI__Guru**** 188679 points

Hello Suman Hu,

Thank you.

sumAN HU said:
My question is: What is the function of the TS_INT# and OLDI_RESETn pins on the EVM board? (Refer fig.2)

I suspect these are the Touch screen interrupt and the OLDI LCD reset input.

If I do not connect these two pins while converting LVDS to RGB using the DS90CF384A converter, will it still work?(refer fig. 1)

DS90CF384A team can answer the best. Please start a E2E with DS90CF384A as the title.

Regards,

Sreenivasa

0 sumAN HU 5 months ago in reply to Kallikuppa Sreenivasa

Prodigy 90 points

@ Kallikuppa Sreenivasa Thank you

Regards,

SumAn Hu

0 Kallikuppa Sreenivasa 5 months ago in reply to sumAN HU

TI__Guru**** 188679 points

Hello Suman Hu,

Thank you.

Regards,

Sreenivasa