MC9S12E128CFUE Datasheet, PDF (548/606 Pages) Freescale Semiconductor, Inc – MC9S12E128 Data Sheet

Chapter 19 Module Mapping Control (MMCV4)
19.3.2.2 Initialization of Internal Registers Position Register (INITRG)
7
6
5
4
3
2
1
0
R
0
0
0
0
REG14
REG13
REG12
REG11
W
Reset
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 19-4. Initialization of Internal Registers Position Register (INITRG)
Read: Anytime
Write: Once in normal and emulation modes and anytime in special modes
This register initializes the position of the internal registers within the on-chip system memory map. The
registers occupy either a 1K byte or 2K byte space and can be mapped to any 2K byte space within the first
32K bytes of the system’s address space.
Table 19-3. INITRG Field Descriptions
Field
Description
6:3
Internal Register Map Position — These four bits in combination with the leading zero supplied by bit 7 of
REG[14:11] INITRG determine the upper five bits of the base address for the system’s internal registers (i.e., the minimum
base address is 0x0000 and the maximum is 0x7FFF).
MC9S12E128 Data Sheet, Rev. 1.07
548
Freescale Semiconductor