4. Memory Map
4.1. Physical Memory Map
The physical memory map of the Armadillo-400 Series is as shown.
4.1 Armadillo-400 Series Physical Memory Map
Start
Address
End Address
Device
Memory
Area
Data Port
Width
Armadillo-420
Armadillo-440
0x0000 0000
0x0000 3FFF
i.MX257 Internal ROM (16KByte)
0x0000 4000
0x0040 3FFF
Reserved
0x0040 4000
0x0040 8FFF
i.MX257 Internal ROM (20KByte)
0x0040 9000
0x3FFF FFFF
Reserved
0x4000 0000
0x6FFF FFFF
i.MX257 Internal Register
[1]
0x7000 0000
0x77FF FFFF
Reserved
0x7800 0000
0x7801 FFFF
i.MX257 Internal RAM (128KByte)
0x7802 0000
0x7FFF FFFF
Reserved
0x8000 0000
0x83FF FFFF
LPDDR SDRAM
(64MByte)
LPDDR SDRAM
(128MByte)
CSD0
16bit
0x8400 0000
0x87FF FFFF
Reserved
0x8800 0000
0x8FFF FFFF
Reserved
0x9000 0000
0x9FFF FFFF
Reserved
CSD1
0xA000 0000
0xA0FF
FFFF
Nor Flash Memory
(16MByte)
Nor Flash Memory
(32MByte)
CS0
16bit
0xA100 0000
0xA1FF
FFFF
Reserved
0xA200 0000
0xA7FF
FFFF
Reserved
0xA800 0000
0xAFFF
FFFF
Reserved
CS1
0xB00 0000
0xB1FF
FFFF
Reserved
CS2
0xB200 0000
0xB3FF
FFFF
Reserved
CS3
0xB400 0000
0xB5FF
FFFF
Reserved
CS4
0xB600 0000
0xB800 0FFF
Reserved
0xB800 1000
0xBB00
1FFF
i.MX257 Internal Register
[1]
0xBB01 2000
0xBFFF
FFFF
Reserved
0xC000 0000
0xFFFF FFFF
Reserved
[1]
For details on the internal registers on the i.MX257, please refer to the "i.MX25 Multimedia Applications Processor Reference Manual" stored in the /
document/datasheet directory on the included DVD.
Armadillo-400 Series Hardware Manual
Memory Map
14