PXD20RM Datasheet, PDF (771/1628 Pages) Freescale Semiconductor, Inc – PXD20 Microcontroller

(RX15MASK) registers are provided for backwards compatibility, and are not used when the BCC bit in
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 BCC bit in MCR
is negated, then the whole Rx Individual Mask Registers address range (0x0880–0x097F) is considered
reserved space.
Table 20-2. Module memory map
Address
Base + 0x0000
Base + 0x0004
Base + 0x0008
Base + 0x000C
Base + 0x0010
Base + 0x0014
Base + 0x0018
Base + 0x001C
Base + 0x0020
Base + 0x0024
Base + 0x0028
Base + 0x002C
Base + 0x0030
Base +
0x0034–0x007F
Base +
0x0080–0x017F
Base +
0x0180–0x027F
Base +
0x0280–0x047F
Base + 0x0480-087F
Base +
0x0880-0x08BF
Use
Module Configuration (MCR)
Control Register (CTRL)
Free Running Timer (TIMER)
Reserved
Rx Global Mask (RXGMASK)
Rx Buffer 14 Mask (RX14MASK)
Rx Buffer 15 Mask (RX15MASK)
Error Counter Register (ECR)
Error and Status Register
Interrupt Mask Register High (IMRH)
Interrupt Mask Register Low (IMRL)
Interrupt Flag Register High (IFRH)
Interrupt Flag Register High (IFRL)
Reserved
Message Buffers MB0–MB15
Message Buffers MB16–MB31
Message Buffers MB32–MB63
Reserved
Rx Individual Mask Registers
RXIMR0-RXIMR15
Access
Type
S
S/U
S/U
Affected
by hard
reset
Yes
Yes
Yes
Affected
by soft
reset
Location
Yes on page 20-11
No
on page 20-15
Yes on page 20-18
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
S/U
Yes
No
on page 20-19
No
on page 20-21
No
on page 20-21
Yes on page 20-21
Yes on page 20-23
Yes on page 20-25
Yes on page 20-26
Yes on page 20-27
Yes on page 20-28
S/U
No
No
—
S/U
No
No
—
S/U
No
No
—
S/U
No
No
on page 20-29
Freescale Semiconductor
PXD20 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
20-5