
Architecture
MOTOROLA
MC68328 USER’S MANUAL 12/9/97
3-9
ARCHITECTURE
3
PRELIMINARY
3.10 PROGRAMMER’S MEMORY MAP
The memory map is a guide to all on-chip resources. Use the following table as a guide when
configuring your chip. The base address used in the table is 0xFFFFF000 and 0xFFF000
from reset. If a double-mapped bit is cleared in the system control register, then the base
address is 0xFFFFF000. Unpredictable results occur if you write to any 4K register space
not documented in the table.
Table 3-3. Programmer’s Memory Map
ADDRESS
NAME
WIDTH
DESCRIPTION
RESET VALUE(HEX)
PAGE #
Base+0x000
SCR
8
System Control Register
0x0C
4-2
Base+0x004
MRR
32
Mask Revision Register
(See note)
System
Base+0x100
GRPBASEA
16
Chip Select Group A Base Register
0x0000
5-4
Base+0x102
GRPBASEB
16
Chip Select Group B Base Register
0x0000
5-4
Base+0x104
GRPBASEC
16
Chip Select Group C Base Register
0x0000
5-4
Base+0x106
GRPBASED
16
Chip Select Group D Base Register
0x0000
5-4
Base+0x108
GRPMASKA
16
Chip Select Group A Mask Register
0x0000
5-5
Base+0x10A
GRPMASKB
16
Chip Select Group B Mask Register
0x0000
5-5
Base+0x10C
GRPMASKC
16
Chip Select Group C Mask Register
0x0000
5-5
Base+0x10E
GRPMASKD
16
Chip Select Group D Mask Register
0x0000
5-5
Base+0x110
CSA0
32
Group A Chip Select Option 0 Register
0x00010006
5-6
Base+0x114
CSA1
32
Group A Chip Select Option 1 Register
0x00010006
5-6
Base+0x118
CSA2
32
Group A Chip Select Option 2 Register
0x00010006
5-6
Base+0x11C
CSA3
32
Group A Chip Select Option 3 Register
0x00010006
5-6
Base+0x120
CSB0
32
Group B Chip Select Option 0 Register
0x00010006
5-6
Base+0x124
CSB1
32
Group B Chip Select Option 1 Register
0x00010006
5-6
Base+0x128
CSB2
32
Group B Chip Select Option 2 Register
0x00010006
5-6
Base+0x12C
CSB3
32
Group B Chip Select Option 3 Register
0x00010006
5-6
Base+0x130
CSC0
32
Group C Chip Select Option 0 Register
0x00010006
5-6
Base+0x134
CSC1
32
Group C Chip Select Option 1 Register
0x00010006
5-6
Base+0x138
CSC2
32
Group C Chip Select Option 2 Register
0x00010006
5-6
Base+0x13C
CSC3
32
Group C Chip Select Option 3 Register
0x00010006
5-6
Base+0x140
CSD0
32
Group D Chip Select Option 0 Register
0x00010006
5-6
Base+0x144
CSD1
32
Group D Chip Select Option 1 Register
0x00010006
5-6
Base+0x148
CSD2
32
Group D Chip Select Option 2 Register
0x00010006
5-6
Base+0x14C
CSD3
32
Group D Chip Select Option 3 Register
0x00010006
5-6
Base+0x200
PLLCR
16
PLL Control Register
0x2400
PLL
Base+0x202
PLLFSR
16
PLL Frequency Select Register
0x0123
PLL