DLP470TE: Do DLP470TP/DLP470TE chipsets refresh rate need to be locked at 60Hz for 4K UHD resolution? Is native 24Hz refresh rate supported for 4K UHD?

Joseph Roy

Part Number: DLP470TE

Hi, I want to know if the DLP470TP or the DLP470TE chipsets can support 4K UHD (3840 × 2160) resolution at native 24hz/48hz/50hz frame rate without 3:2 pulldown. The product tech sheets claims the chips has a refresh rate of up to 240Hz, however, it also demonstrate a typical 4K UHD system showing the displayed refresh rate at 60Hz which makes me confused.

I've been advised by a projector manufacture that 4K UHD projectors running on XPR technology using either the DLP470TP or the DLP470TE chips can only offer a locked 60Hz refresh rate because they are using a matrix of 1080p chips, change the refresh rate to 24Hz/48Hz/60Hz is impossible on projectors loaded with DLP470TP/DLP470TE to deliver 4K images. I doubt those claims, could you please help to advise if the displayed refresh rate of those two chips can be modified to 24Hz/48Hz/50Hz for 4K UHD image? Thanks.

over 4 years ago

0 Gabriel Lake1 over 4 years ago

TI__Expert 3450 points

Hi Joseph,

For 4K display, they can support 48, 50 and 60Hz, and for Full HD display they can support a range from 24Hz to 240Hz.

A complete list of the HD refresh rates can be found within the DLP470TE-8.1 software package in the timing chart, available on ti.com.

regards,

Gabriel

0 Joseph Roy over 4 years ago in reply to Gabriel Lake1

Prodigy 20 points

Hi Gabriel,

Thanks for the information regarding DLP470TE, is that the same situation for the DLP470TP chipset? Does DLP470TP also support 48/50/60Hz for 4K and 24Hz-240Hz for FHD?

Thanks.

Regards

Joseph

0 Gabriel Lake1 over 4 years ago in reply to Joseph Roy

TI__Expert 3450 points

Joseph,

The same timing table that is available for the DLP470TE is not publicly available for the DLP470TP, however, I believe the same rates are possible with the DLPC6421 and DLP470TP chipset. See these previous posts for further information: p1 p2

In the 470TP datasheet you can see the following latency information on some supported source rates:

regards,

Gabriel

0 Gabriel Lake1 over 4 years ago in reply to Gabriel Lake1

TI__Expert 3450 points

Joseph,

I looked into the DLP470TP input rates further, and the actual supported rates are reflected in Table 3. 48, 50 and 60Hz for UHD and 48, 50, 60, 100, 120, 200, and 240 Hz for FHD.

regards,

Gabriel

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DLP470TE: Do DLP470TP/DLP470TE chipsets refresh rate need to be locked at 60Hz for 4K UHD resolution? Is native 24Hz refresh rate supported for 4K UHD?