AGX Xavier CSI bandwidth

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
1

Hello everyone.
I’m developing machine vision system and i have intetntion to try several cameras using several interfaces. And judging by Table 7.7 NVCSI Summary of Changes (v1.0 to v2.0) from AGX Xavier techical reference manual ver 1.4p CSI interface provide bandwidth up to 40 Gbps which is sufficient to my purposes, because i have 6 cameras with data rate up to 4.5 Gbps per camera. My initial idea was that I can use 2 lane per camera to provide necessary bandwith, but in NVIDIA Jetson AGX Xavier Developer Kit Carrier Board ver 2.1 on page 21 I saw

Note: Due to the CSI routing length on the carrier board and the additional connector between the module and the end device, D-PHY mode is supported only up to 1.5 Gbps.

On the other hand in Jetson AGX Xavier Series OEM Product v2.2 in Table 10-5. MIPI CSI D-PHY Interface Signal Routing Requirements I saw physical constraints if I follow, i can achieve full bandwidth.
And eventually I have few questions

  • Does AGX Xavier support CSI bandwidths up to 2.5 Gbps as it pointed in document?

  • If I buy or design my own carrier board following constraints, will I achieve desired bandwidths?

4

Devkit carrier board spec is only for carrier of devkit which is up to 1.5 Gbps. If you make custom design following design guidelines well, it can be up to 2.5 Gbps.

5

Thanks for reply,