SN65DSI83: Output format support (60 fps 800 X 480 )

Roy Chou1

Genius 16110 points

Part Number: SN65DSI83

Hi Team

My customer would like to select the bridge IC from MIPI to LVDS.

Does this IC could output 60 fps 800 X 480 at 18 bpp and 24 bpp as attached? Or any suggestion?

over 5 years ago

0 Ikechukwu Anyiam over 5 years ago

TI__Mastermind 35130 points

Hi Roy,

Please check #7 of this application note: http://www.ti.com/lit/an/slla356/slla356.pdf

I believe the SN65DSI83 should be able to support 800 x 480 @ 60Hz, but the clock frequency looks to be getting very close to the minimum supported frequency, so the customer should double check with their display datasheet.

Regards,

I.K.

0 Roy Chou1 over 5 years ago in reply to Ikechukwu Anyiam

TI__Genius 16110 points

Hi I.K.

I'm not familiar with this device. Could you help show me how to calculate the clock frequency?

Regards,

Roy

0 Ikechukwu Anyiam over 5 years ago in reply to Roy Chou1

TI__Mastermind 35130 points

Hi Roy,

#7 in the application note I shared explains how.

Regards,

I.K.

0 Roy Chou1 over 5 years ago in reply to Ikechukwu Anyiam

TI__Genius 16110 points

Hi I.K.,

Just would like to double check below point with you.

LVDSCLK = 800*480*60*(1+%blanking) = 23.04MHz(if blanking=0)

So we need to verify the %blanking in panel to check if 23.04*(1+%blanking) > 25MHz(minimum LVDS CLK frequency), right?

Thank you.

Regards,

Roy

0 Ikechukwu Anyiam over 5 years ago in reply to Roy Chou1

TI__Mastermind 35130 points

Hi Roy,

Your calculation is correct but blanking will never be 0.

If you have the panel datasheet you don't need to do any calculations, as it will state the required clock frequency as well as all the other timing parameters.

You can also reference this training video, as it goes over how to configure the device with information from a panel datasheet: https://training.ti.com/configuring-sn65dsi8x-single-channel-dsi-single-link-lvds-operation

Regards,

I.K.

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SN65DSI83: Output format support (60 fps 800 X 480 )