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Hyperlink lane swapping, mixed lanes

Asko Oinonen
Prodigy 110 points

Hi,

I connect two 6678 DSPs with Hyperlink on same PCB. To follow strict layout instructions I must swap the lanes as follows (not only two lanes with each):

---DSP1 TX0-->DSP2 RX0

---DSP1 TX1-->DSP2 RX2

---DSP1 TX2-->DSP2 RX3

---DSP1 TX3-->DSP2 RX1

I this allowed?

Regards

Asko

  • 0
    TI__Mastermind 43660 points
    Asko,

    Yes, the HyperLink module will detect the lane swapping and the pair inversion automatically and correct for these changes. There is no need of any configuration. Lane swapping should only be used if two or four lanes are used. For example, you can't define a one lane interface and then use transmit lane 1 connected to receive lane 0. Lane 0 transmit and receive should be used for single lane connections at both ends.

    Regards,
    Senthil