SN75DPHY440SS: Support trace length of SN75DPHY440SS...

Peter Tseng

Mastermind 6540 points

Part Number: SN75DPHY440SS

Hi Sir,

May I know what is the DPHY440SS capability for trace length support?

As my customer design, their MIPI 4 lanes trace length is 62cm Max. from sensor output to the connector.

The Max. data rate is 1.3Gb.

Please help to advise.

Thanks.

over 4 years ago

0 David (ASIC) Liu over 4 years ago

TI__Guru**** 189211 points

Hi,

The DPHY440 can support max data rate of 1.5G, so 1.300Gbps is within the DPHY440 support capability.

The DPHY has both receiver equalizer and transmitter pre-emphasis to compensate the channel ISI loss. Three RX equalization levels are available at 0 dB, 2.5 dB, and 5 dB at 750MHz. Two TX pre-emphasis levels are available at 0dB and 2.5dB. Depending on the channel loss and the placement of the DPHY440, we can use both RX equalizer and TX pre-emphasis to achieve the optimal result.

Do we know the loss of this 62cm trace and the placement of the DPHY440 in their system?

Thanks

David