DS90UB953-Q1: OV2740 (2Lane MIPI Sensor)

Kai Hsiao

Guru 12675 points

Part Number: DS90UB953-Q1

Hi Sir

May I know OV2740 could be used for 953 ?

SPEC is 1080p60f ,but 2 Lane MIPI

Thanks

over 6 years ago

0 Casey McCrea over 6 years ago

TI__Guru** 103215 points

Hello Kai,

What is the per-lane MIPI speed?

Thanks,

Casey

0 Steven(Shenzhen) Shi over 6 years ago

TI__Mastermind 30515 points

Hi Kai,

For UB953, the CSI2 bandwidth is Ref.clk x 128. If the RefClk is 26MHz (maximum value), the CSI2 bandwidth is 3.328Gbps. and the maximum lane data rate is Refclk x64. So for your two data lanes case, the maximum CSI2 bandwidth can be up to 3.328Gbps. For you video input from OV2740, pls check the video format is YUV422 or RGB888, if it is YUV422, it is ok.

best regards,

Steven

0 Kai Hsiao over 6 years ago in reply to Steven(Shenzhen) Shi

Guru 12675 points

Hi Steven

I refer to 953 datasheet Table 6

if the Refclk is 26MHz

Sync mode is 26MHz *128 = 3.328Gbps ,so 2 Lane CSI bandwidth is 1.664Gbps ?

My explain is correct or not ?

How to know YUV422's and RGB888's bandwidth

OV2740 is 10bit raw RGB

0 Casey McCrea over 6 years ago in reply to Kai Hsiao

TI__Guru** 103215 points

Hello Kai,

Your bandwidth calculation is correct. For 2 lanes and REFCLK = 26MHz, the bandwidth is 832*2 = 1.664Gbps total. For 10 bit RAW, you would calculate the bandwidth by multiplying the total frame dimensions and blanking by 10 bits. See the attached example - the blanking and overhead percentage is an estimate and must be checked with the image sensor vendor for the real number.

0486.Camera Data Calculator.xlsx

Best Regards,

Casey

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DS90UB953-Q1: OV2740 (2Lane MIPI Sensor)