PXR40RM Datasheet, PDF (816/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

FlexCAN Module
registers are provided for backwards compatibility, and are not used when the MBFEN bit in
FLEXCAN_x_MCR is asserted.
The address ranges 0x0060–0x047F and 0x0880–0x097F are occupied by two separate embedded
memories. These two ranges are completely occupied by RAM (1056 and 256 bytes, respectively) only
when FlexCAN is configured with 64 MBs. When it is configured with 16 MBs, the memory sizes are 288
and 64 bytes, so the address ranges 0x0180–0x047F and 0x08C0–0x097F are considered reserved space.
When it is configured with 32 MBs, the memory sizes are 544 and 128 bytes, so the address ranges
0x0280–0x047F and 0x0900–0x097F are considered reserved space. Furthermore, if the MBFEN bit in
FLEXCAN_x_MCR is negated, then the whole Rx Individual Mask Registers address range
(0x0880–0x097F) is considered reserved space.
24-6
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor