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DS90UB936-Q1: DS90UB935-Q1 and DS90UB936-Q1 Bandwidth to be confirmed

user4289837
Intellectual 435 points
Part Number: DS90UB936-Q1
Other Parts Discussed in Thread: DS90UB954-Q1, DS90UB953-Q1

Hello，

Here is the title for DS90UB936-Q1" Dual 3 Gbps FPD-Link III Deserializer Hub With MIPI CSI-2 Outputs"

But, in the datasheet ,7.4.1, it says that "In CSI-2 mode each deserializer Rx Port can support an FPD-Link line rate up to 4.16 Gbps"

Which is correct? or any other meaning?

Also, In 935 datasheet, according  table6， CSI bandwidth <= fx128=3.2Gbps which is different from the spec. which one is correct?

according this information ,I guess that 935 936 fpdlink work at line rate fx160 = 4Gbps, is it corrrect?

best regards

Nick Li

  • 0
    TI__Guru** 103215 points

    Hello Nick,

    935/936 operate with an FPD-Link serial line rate of up to 4.16Gbps - same as DS90UB953-Q1/DS90UB954-Q1, but they support only up to 2.528Gbps CSI-2 data throughput per port. The CSI-2 video rate and FPD-Link serial link rate are independent for this device since the forward channel is a fixed frequency always. 

    The table 6 has a known typo which will be corrected at the next datasheet update. CSI-2 bandwidth for 935 should be maximum 2.528Gbps, not f*128

    Best Regards,

    Casey 

  • 0 in reply to Casey McCrea
    Intellectual 435 points

    Hello , Casey

    I got it, Thanks very much!

    Best Regards,

    Nick