DS90UB954-Q1: asymmetrical mipi lanes configurations between the SERDESs

Tzachi Bear97

Intellectual 320 points

Part Number: DS90UB954-Q1

i am using the 953/954 as my SERDES to send my video from one board to the other,

can i config them to use only 2 lanes on one side (953) and "open" them to 4 lanes (on the 954)?

(maybe this way i can also connect two 953 to one 954)

thanks

over 7 years ago

0 Palaniappan Manickam over 7 years ago

TI__Genius 10475 points

Hello,
The 954 supports replicate mode. In the CSI-2 Replicate mode, both ports can be programmed to output the same data. The output from CSI-2 port 0
is also presented on CSI-2 port 1. Please refer to the DS90UB954 datasheet for details.

You can also connect two DS90UB953 data to one CSI-2 output on the 954. Please refer to the system examples in the 954 datasheet.

0 Tzachi Bear97 over 7 years ago in reply to Palaniappan Manickam

Intellectual 320 points

hello and thank you for the reply

i am trying not to replicate the 2 lines MIPI, but to take a 2lane MIPI camera and open it to a 4 LANE MIPI

could it be done by configuring the SerDes?

thanks

0 Palaniappan Manickam over 7 years ago in reply to Tzachi Bear97

TI__Genius 10475 points

Hello,
Do you have a block diagram of the proposed system you have in mind?
The 954 supports virtual channels where data from different sensors/serializers can be interleaved in the same data stream and mapped to the 954 output in different ways. Please refer to the 954 datasheet examples on virtual channel mapping (section 7.4.20).

0 Tzachi Bear97 over 7 years ago in reply to Palaniappan Manickam

Intellectual 320 points

0 Vijaya Ceekala over 7 years ago in reply to Tzachi Bear97

TI__Intellectual 2930 points

Hello Tzachi

Yes. You can use only 2 lanes on 953/935 Serializer and produce the data on 4 lanes on 936 side

Regards
Vijay

0 Tzachi Bear97 over 7 years ago in reply to Vijaya Ceekala

Intellectual 320 points

thank you very much Vijay

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DS90UB954-Q1: asymmetrical mipi lanes configurations between the SERDESs