Disable Digital Outputs via FCCU on MPC5744P

[daniellarsson]

Hi,

Regarding MPC5744P the Safety Manual states the following: "When the FCCU intends to drive FCCU_F[0] to a fault condition, the SIUL2 disables the output buffer of such pins for which SIUL2_MSCRn[SMC] is cleared ...". The Safety Manual mentions this as a possibility only for pins that are associated with communication controllers, like CAN. But what happens if SIUL2_MSCRn[SMC] is cleared for a Digital Out pin? Will it be forced to tri-state/high-z/floating state?

/Daniel

[davidtosenovjan]

It does not matter how the pin is configured, if SMC is cleared and device goes to SAFE mode, pin goes to high impedance.

Note that SMC is not configurable for all pins. List you may find in Table 4-16 (MSCR addresses and default settings) in device RM.

If marked as P(E) in SMC column than it is configurable.

[daniellarsson]

Thanks for a clear answer!

BR Daniel

On Wed, May 25, 2016 at 12:58 PM, davidtosenovjan <