SPC564Axx/SPC56ELxx exception cases

AN4417

12/22

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SPC564Axx/SPC56ELxx exception cases

This chapter lists most common exception cases that application software can experience

while running code on SPC564Axx/SPC56ELxx devices.

In general all protection access exceptions and 2b ECC exception lead to the same

machine check exception because of external bus error termination. In such cases further

analysis relies on memory area check.

3.1

Flash 2b ECC error

3.1.1

Cause of the exception

Platform flash memory controller (PFLASHC) terminates bus transaction between CPU and

PFLASHC controller in case the Flash memory array signals 2b ECC problem during read

access. This leads to machine check exception because of bus_error termination.

Table 4. SPC564Axx/SPC56ELxx exception causes

Exception

cause

Error

signaling

Exception

Description

Flash 2b ECC

error

External

bus error

Machine

check

Two or multiple bit error in the Flash memory leads to

the machine check exception when faulty area is

read, instruction fetch or data read.