MC9S12Q FREESCALE [Freescale Semiconductor, Inc], MC9S12Q Datasheet - Page 114
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MC9S12Q
Manufacturer Part Number
MC9S12Q
Description
Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12Q.pdf
(644 pages)
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Chapter 3 Module Mapping Control (MMCV4) Block Description
3.3.2.2
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.
114
Module Base + 0x0011
Starting address location affected by INITRG register setting.
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 3-4. Initialization of Internal Registers Position Register (INITRG)
= Unimplemented or Reserved
REG14
0
6
Table 3-3. INITRG Field Descriptions
REG13
0
5
MC9S12Q128
REG12
Rev 1.09
0
4
Description
REG11
0
3
0
0
2
Freescale Semiconductor
0
0
1
0
0
0
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