MPC5744 Transfer Error

[Jamber_H]

In the reference manual of 5744, there are many "transfer errors" case, such as write a protected register while Hard Lock Bit is set, or access an unimplemented registers, but what "transfer errors" mean? to assert an exception or assert a flag, or other response?

[lukaszadrapa · Accepted solution]

Hi,

transfer error is known also as bus error. It occurs when given address is not accessible for read or write. The access is terminated on internal bus and Machine Check (IVOR1) is triggered in this case. Take a look at section "5.7.2 Machine Check Interrupt (IVOR1)" where it is described in detail:

https://www.nxp.com/webapp/Download?colCode=E200Z4RM&location=null

The most important table is this one:

Regards,

Lukas