MPC5604B/C Microcontroller Reference Manual, Rev. 8
Freescale Semiconductor 427
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 BCC bit in MCR
is negated, then the whole Rx Individual Mask Registers address range (0x0880–0x097F) is considered
reserved space.
The FlexCAN module stores CAN messages for transmission and reception using a Message Buffer
structure. Each individual MB is formed by 16 bytes mapped on memory as described in Table 22-3.
Table 22-2. FlexCAN memory map
Base addresses:
0xFFFC_0000 (FlexCAN_0)
0xFFFC_4000 (FlexCAN_1)
0xFFFC_8000 (FlexCAN_2)
0xFFFC_C000 (FlexCAN_3)
0xFFFD_0000 (FlexCAN_4)
0xFFFD_4000 (FlexCAN_5)
Address offset Register Location
0x0000 Module Configuration (MCR) on page 433
0x0004 Control Register (CTRL) on page 437
0x0008 Free Running Timer (TIMER) on page 440
0x000C Reserved
0x0010 Rx Global Mask (RXGMASK) on page 441
0x0014 Rx Buffer 14 Mask (RX14MASK) on page 442
0x0018 Rx Buffer 15 Mask (RX15MASK) on page 443
0x001C Error Counter Register (ECR) on page 443
0x0020 Error and Status Register (ESR) on page 444
0x0024 Interrupt Masks 2 (IMASK2) on page 447
0x0028 Interrupt Masks 1 (IMASK1) on page 448
0x002C Interrupt Flags 2 (IFLAG2) on page 448
0x0030 Interrupt Flags 1 (IFLAG1) on page 449
0x0034–0x005F Reserved
0x0060–0x007F Reserved
0x0080–0x017F Message Buffers MB0–MB15
0x0180–0x027F Message Buffers MB16–MB31
0x0280–0x047F Message Buffers MB32–MB63
0x0480–0x087F Reserved
0x0880–0x08BF Rx Individual Mask Registers RXIMR0–RXIMR15 on page 450
0x08C0–0x08FF Rx Individual Mask Registers RXIMR16–RXIMR31 on page 450
0x0900–0x097F Rx Individual Mask Registers RXIMR32–RXIMR63 on page 450
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