NUC970 Technical Reference Manual
Publication Release Date: Dec. 15, 2015
- 65 -
Revision V1.30
NUC97
0
T
E
CHNIC
A
L
RE
F
E
RE
N
CE
MA
NUA
L
5.2.4 System Memory Map
This chip support only little-endian data format and provides 4G-byte addressing space. The
diagram shown below describes the memory space definition.
The memory space from 0x0000_0000 to 0x2FFF_FFFF is for SDRAM and external devices. The
memory space from 0x3C00_0000 to 0x3C00_DFFF is for embedded 56 k-byte SRAM. The
memory space for On-Chip Controllers and Peripherals is from 0xB000_0000 to 0xBBFF_FFFF
while the memory space from 0xFFFF_0000 to 0xFFFF_FFFF is for 16 k-byte internal Boot ROM.
This chip provides the shadow memory function. The memory space from 0x8000_0000 to
0xAFFF_FFFF is the shadow memory space for memory space from 0x0000_0000 to
0x2FFF_FFFF. The memory space from 0xBC00_0000 to 0xBC00_DFFF is the shadow memory
space for memory space from 0x3C00_0000 to 0x3C00_DFFF. If the DMA of On-Chip Controller
wants to access this 56 k-
byte embedded SRAM, it’s necessary to use memory space from
0xBC00_0000 to 0xBC00_DFFF
The reserved memory space is un-
accessible. Chip’s behavior is undefined and unpredictable
while accessing to reserved memory space.