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Why would you need 18 CAN interfaces?
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daqq:
Thanks, understood. Makes sense to have the buses separate  :)
mac.6:
31x31 0.8mm BGA?
Wonder who is the lead customer (because these beasts are always taylored for a customer).
Dr. Frank:
Well, I'm working in Automotive R&D, have not yet seen that µC. That's definitely an Automotive component, as it's AEC-Q100 qualified. Its "2 Applications" description is a bit odd, though.

Such components are intended for a central unit, which basically might connect to the about 60 other control units in a passenger car.

Usually you have several separate types of CAN interfaces in a car, like steering-, comfort-, safety- / security-,  information-, entertainment- busses, which can be low-speed or high speed CAN.
 
Nowadays, Ethernet, MOST / optical busses complement CAN for high speed infotainment purposes.

This chip has additional graphic cores inside, so it's probably intended as a central infotainment processor, like inside a Central Display.

Customers are the usual Tier1 manufacturer like Bosch, Denso, Continental, or OEM TESLA.

Frank
 
Psi:
There's a trend to move away from having 100's of smaller MCU modules spread around a car to having 1 or 2 bigger systems that control everything.
PwrElectronics:
My current project at work is using a Infineon Aurix with 8 CAN-FD interfaces.  292 pin BGA.  On the board, there are 3 of them used on one version.  One of the CAN's is tied to the main machine controller bus, but the others are intended for sub-bus for things that get their orders from "middle management" as opposed to the main controller.

One thing to keep in mind (not sure if true of this TI part) is many of the pins on the micro can be configured for different things.  So, for that Aurix you could use all 8 CANs but would lose some other I/O in the process.  The other thing to keep in mind is when it comes to the board layout, it may be easier to route depending on which pins you select for your CAN of the available choices.
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