AM4378: LVDS bridge to HDMI display

Priya Nadathur70

Expert 2795 points

Part Number: AM4378
Other Parts Discussed in Thread: SN75LVDS83B

Can the LVDS83B be used with the AM4378 processor as an LVDS bridge to an HDMI display?

A 24 bit RGB LCD display is assumed. Looking at the LCD connectivity wiki, the schematic under

connection to LVDS LCD shows a connector setup to generate the LVDS83B outputs.

Thanks,

Priya

over 9 years ago

0 Biser Gatchev-XID over 9 years ago

TI__Guru**** 393215 points

In order to connect to an HDMI display you need a HDMI transmitter, not an LVDS serializer. You can check the AM437x GP EVM schematics for a reference: processors.wiki.ti.com/.../AM437X_EVM_Boards

0 Priya Nadathur70 over 9 years ago in reply to Biser Gatchev-XID

Expert 2795 points

Biser,
Thank you for your reply. The HDMI transmitter output must be LVDS. Where can a
HDMI to LVDS Bridge fit in this schematic?
Thanks,
Priya

0 Biser Gatchev-XID over 9 years ago in reply to Priya Nadathur70

TI__Guru**** 393215 points

Nowhere. The HDMI transmitter is the device that converts parallel RGB to HDMI format.

0 Priya Nadathur70 over 9 years ago in reply to Biser Gatchev-XID

Expert 2795 points

If an LVDS LCD display is used, is the SN75LVDS83B compatible with the AM4378?
Following the same connection formats from this wiki:
processors.wiki.ti.com/.../LCD_connectivity

Thanks,
Priya

0 Biser Gatchev-XID over 9 years ago in reply to Priya Nadathur70

TI__Guru**** 393215 points

Yes, it should be. Keep in mind that the LVDS serializer should be able to support the highest pixel clock frequency that you intend to use.

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AM4378: LVDS bridge to HDMI display