My CAN application does not work anymore after using the C167CR GA or JA Step. Why?
Bit SYSCON.2 has been modified into a general XBUS Peripheral Enable bit, i.e. it controls both the XRAM and the CAN module: “When bit SYSCON.2 = 0 (default after reset), and an access to an address in the range EF00h…EFFFh is made, either an external bus access is performed (if an external bus is enabled), or the Illegal Bus Trap is entered. In previous versions, the CAN module was accessed in this case.” For more information, please refer to Infineon’s C167CR Errata Sheet from November 2, 2000 / Release 1.1 Stepping Code / Marking: ES-GA, GA, GA-T or ES-JA. To set bit SYSCON.2 in the startup code, open the dialog box Project Options | Application | Startup, select register SYSCON and enable bit #2 (XPEN).
