第4章 Memory Map

4.1. Physical Memory Map

The physical memory map of the Armadillo-400 Series is as shown.

表4.1 Armadillo-400 Series Physical Memory Map

Start Address	End Address	Device		Memory Area	Data Port Width
Start Address	End Address	Armadillo-420	Armadillo-440	Memory Area	Data Port Width
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^[a]
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	LPDDR SDRAM (128MByte)
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	Nor Flash Memory (32MByte)
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^[a]
0xBB01 2000	0xBFFF FFFF	Reserved
0xC000 0000	0xFFFF FFFF	Reserved
^[a]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.


第3章 Overview	PDF version	第5章 Interface Specifications