Flashing the MK60 with ZCP software

[terra]

So I came across this document. Perhaps the TI IC is the more significant one for our purposes (but would raise the question as to what the heck the Motorola/Freescale controller is for?)

https://www.scribd.com/document/3525...xOnPage:0,best Match:false

[karter16]

Take with a grain of salt since the MCU is motorola / freescale branded in all examples I've seen, but I came across this document:

https://www.scribd.com/document/3525...xOnPage:0,best Match:false

Very interesting! The other chip is certainly a TI chip. Interesting that that link also notes a “2 chip design” for redundancy. Could it possibly be two different MCU types are used to deliver that redundancy?


Sent from my iPhone using Tapatalk

[terra]

Very interesting! The other chip is certainly a TI chip. Interesting that that link also notes a “2 chip design” for redundancy. Could it possibly be two different MCU types are used to deliver that redundancy?


Sent from my iPhone using Tapatalk

Yep I just realized that looking at the photos again.

Could be, though seems a bit convoluted to use two different MCUs altogether for redundancy. My other that is it could be that one handles the ABS / stability control stuff and the other handles the communications with the rest of the car?

[karter16]

Yep I just realized that looking at the photos again.

Could be, though seems a bit convoluted to use two different MCUs altogether for redundancy. My other that is it could be that one handles the ABS / stability control stuff and the other handles the communications with the rest of the car?

That would certainly make more sense than two different chips sharing function, that would be next-level redundancy lol. I'll have a hunt later and see if that info about the TI chip helps narrow down what chipset it could be based on.


Sent from my iPhone using Tapatalk

[Bry5on]

Good luck! I dug pretty hard into my Rolodex but came up empty handed.

It was a bit tricky to trace the PCBA so I gave up on that as well, but we could answer the MCU question by following the traces as a last ditch.

[karter16]

Yeah - plus TI's catalogue is absolutely massive. I'm a bit more optimistic about the Motorola chip. I'm pretty confident it is also an MCU so still a good lead to follow.

[Bry5on]

Bare PCBA for the record. Guess I never posted these

[terra]

Yeah - plus TI's catalogue is absolutely massive. I'm a bit more optimistic about the Motorola chip. I'm pretty confident it is also an MCU so still a good lead to follow.

Yeah I agree it's definitely an MCU and perhaps more relevant for our purposes anyway. But does seem to be more custom than most of the other MCUs found in various modules of our cars. The mask (1L93E) doesn't seem to correspond to any publicly available MCUs.

Perhaps should take another crack at disassembling some of the winkfp files that correspond to the E6x generation MK60s. Presumably they'd use similar microcontrollers and would help narrow things down.

[karter16]

Yeah I agree it's definitely an MCU and perhaps more relevant for our purposes anyway. But does seem to be more custom than most of the other MCUs found in various modules of our cars. The mask (1L93E) doesn't seem to correspond to any publicly available MCUs.

Perhaps should take another crack at disassembling some of the winkfp files that correspond to the E6x generation MK60s. Presumably they'd use similar microcontrollers and would help narrow things down.

Good idea - so winkfp has binary data for the E6x generation units does it. I agree that it would be pretty likely that the microcontrollers would be of the same family at least.

FWIW my somewhat educated guess is that the TI chip is a TMS470 family variant. Package, pin count, clock speed and ROM size are all appropriate for the era, plus they are identified as being commonly used in Automotive ABS units, etc.

[Bry5on]

Oh man, maybe the move is to disassemble the e60 generation and modify the CAN IDs it transmits to so that it’s compatible with the e46.. I understand that some variants have programmable wheelbase, track, steering ratio, Ackerman, etc.

Just configure an e60 unit and install into an e46.

[karter16]

Oh man, maybe the move is to disassemble the e60 generation and modify the CAN IDs it transmits to so that it's compatible with the e46.. I understand that some variants have programmable wheelbase, track, steering ratio, Ackerman, etc.

Yeah the E5 variant right. That would be the ultimate if it's doable. I think it has a bunch of extra sensors over the E46 version though right


Sent from my iPhone using Tapatalk

[Bry5on]

Yeah the E5 variant right. That would be the ultimate if it's doable. I think it has a bunch of extra sensors over the E46 version though right


Sent from my iPhone using Tapatalk

I think it’s just the integral pressure sensors that replace the e46’s master cylinder sensors. heinzboehmer and I had discussed this before but I’ve forgotten.