DS90UB947-Q1: whether 948 could support 3840*720 @50 fps

Amelie Zheng

Genius 10865 points

Part Number: DS90UB947-Q1

Hi Team,

Just want to confirm that whether 948 could support 3840*720 @50 fps.

PCLK=.3840*720*50*1.05=145MHz<170MHz.

So I think it is ok, right?

over 5 years ago

0 Steven(Shenzhen) Shi over 5 years ago

TI__Mastermind 30515 points

yes, it can. for your video format, the PCLK is ~150MHz, and our 948 can support up to 192MHz PCLK.

regarsd,

Steve

0 Amelie Zheng over 5 years ago in reply to Steven(Shenzhen) Shi

TI__Genius 10865 points

Hi Steven,

Thanks for your quick response. I am confirmed with customer that they still need 60 fps, which means PCLK need to support 3840*720*60*1.05=174MHz.

So they can't use 947 (only 170MHz) +948. They need to use 941 and 948. But their SOC output only support LVDS.

So we need LVDS to Mipi bridge. As for Mipi to LVDS, we have DSI 83/84. But as for LVDS to MIPI (PCLK could support 174MHz), do we have such a bridge?

0 Steven(Shenzhen) Shi over 5 years ago in reply to Amelie Zheng

TI__Mastermind 30515 points

as i know, we have no dsi2oldi device, you can check the FPGA solution for this.

but i think it is better if you can reduce the frame rate you can use 947 option.

regarsd,

Steven

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DS90UB947-Q1: whether 948 could support 3840*720 @50 fps