mc9s12hz256v2 Freescale Semiconductor, Inc, mc9s12hz256v2 Datasheet - Page 608

• Manufacturer Part Number: mc9s12hz256v2
• Description: Hcs12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Chapter 22 Module Mapping Control (MMCV4)
22.3.2.2
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.
608
REG[14:11]
Reset
Field
6:3
W
R
Internal Register Map Position — These four bits in combination with the leading zero supplied by bit 7 of
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).
Initialization of Internal Registers Position Register (INITRG)
0
0
7
Figure 22-4. Initialization of Internal Registers Position Register (INITRG)
= Unimplemented or Reserved
REG14
0
6
Table 22-3. INITRG Field Descriptions
REG13
MC9S12HZ256 Data Sheet, Rev. 2.05
0
5
REG12
0
4
Description
REG11
0
3
0
0
2
Freescale Semiconductor
0
0
1
0
0
0