DS90UB954-Q1: FPD3_MODE selection

Yuta Kurimoto

Part Number: DS90UB954-Q1

Hello Team,

I got a question from customer about FPD3_MODE selection.

Q. Datasheet says "Each input port can be individually configured for CSI-2 or RAW modes of operation". Does it mean that we can set CSI-2 mode for port0(RIN0+ and RIN0-), RAW mode for port1(RIN1+ and RIN1-)? If so can you please let me know how to set like this?

Q. Datasheet says "The input mode of operation is controlled by the FPD3_MODE (Register 0x6D[1:0]) setting in the Port Configuration register. The input mode may also be controlled by the MODE strap pin." If the MODE pin voltage set RAW10, and register 0x6D[1:0] set CSI mode, which setting is prioritized?

Thanks,

Yuta Kurimoto

over 4 years ago

+1 Hamzeh Jaradat over 4 years ago

TI__Guru** 108380 points

Hello Yuta,

Normally it is sett using the MODE pin. But if you want to use different modes for different Inputs, then the Mode can be overwriiten using register 0x6D.

You can set the Mode individually for each RX Port by selecting that specific port in reg 0x4C. Means:

For RX Port0 ,

0x4C = 0x01, then set 0x6D

For RX Port1 ,

0x4C = 0x12, then set 0x6D

0 Yuta Kurimoto over 4 years ago in reply to Hamzeh Jaradat

TI__Genius 10675 points

Hello Hamzeh,

Thanks for your answer.

Q. In the customer's usecase, they input 30fps YUV422 MIPI 2-lane data. In that case should they use R(high)=open, R(low)=10k for MODE pin voltage divider?

Q. Now there are R(high)=73.2k, R(low)=57.6k in customer board(It means RAW10 mode). In this case, customer found that the device successfully received the 30fps YUV422 MIPI 2-lane data. Do you know why?

Thanks,

Yuta Kurimoto

+1 Casey McCrea over 4 years ago in reply to Yuta Kurimoto

TI__Guru** 103215 points

Hello Yuta - looks like this question is already asked here so please refer to the answer there: https://e2e.ti.com/support/interface-group/interface/f/138/t/999800

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DS90UB954-Q1: FPD3_MODE selection