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Why would you need 18 CAN interfaces?
chickenHeadKnob:
--- Quote from: Jeroen3 on August 30, 2023, 01:13:11 pm ---There is also the possibility that some of specs are tailored for at customer request.
At this scale of chips using the spare gates to fit some more CAN busses doesn't have that much of an impact.
I think it is specifically targeted as main controller for autonomous vehicles, with the two realtime controllers, camera feeds, audio io, display controller, PCIE lanes (for the neural network chip), ethernet and ecc ddr4. I mean, they sell it as TDA4VH-Q1 as well by the looks of it.
So, this could be a part requested by Tesla. Or when they placed the product they made sure to add additional features to broaden market reach?
--- End quote ---
Exactly this. When ever you see a really weird part it almost certainly was specc'd by a high volume customer, and then the semi-manufacturer decides to make a general release. I remember back in the mid 80-s when anti-lock brakes were coming into vogue then motorola issued that 68000 series part with the very fancy and complicated 4 channel TPU. I was told the whole intel 8096 series and follow ons were prompted by Robert Bosch contracting a better ECU processor from intel.
New BEV cars have scores of mcu's in the battery management system. a dual CAN bus on the main processor would be through-put saturated.
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