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Title: Bosch BDM VF1 and 3.3 volt Post by: n0ble on November 18, 2013, 08:36:41 PM Hi,
With the Chinese BDM connectors they miss out the 3.3v and VF1 pins for BDM yet when trying to pull off a file missing these pins out it works. What are these pins used for? Thanks Title: Re: Bosch BDM VF1 and 3.3 volt Post by: Basano on January 30, 2014, 06:57:32 AM I think I've just got to the same point you did!
After a lot of reading and looking at schematics, I was also wondering about the consequences of using a 10 pin header versus a 12 pin header. The chinese clones use the 10 pin header but at the cost of leaving out some signals (3.3v and VFLSx). What's the impact ??? So I think it's answered here on page 4. http://cache.freescale.com/files/microcontrollers/doc/app_note/AN2000.pdf (application note attached as well) Due to various application requirements, there are 3 possible MPC555, MPC53x, and MPC56x BDM connector pinouts. In addition, there is a fourth option available does not use the VFLS[0:1] or FRZ signals and determines the freeze status solely on information clocked out of the MPC55x and MPC56x debug port. However, this option is not supported on all debuggers. Title: Re: Post by: n0ble on April 08, 2014, 02:31:59 PM Thanks Basano. Excellent information. For the purpose of simply reading and writing flash in debug mode, all mentioned pin configurations seem sufficient. I guess problems would come when attempting to use for actual debugging.
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