Intel IXP43X manual Supported DDRI 32-bit SDRAM Configurations

Intel® IXP43X Product Line of Network Processors—Hardware Design Guidelines

Table 25.	Supported DDRI 32-bit SDRAM Configurations
DDR SDRAM		DDR SDRAM		Address Size		Leaf Select		Total	Page
			# Banks					Memory
Technology		Arrangement							Size	b
				Row	Column	DDR_BA[1]	DDR_BA[0]	Sizea
		16 M x 8	1	12	10	ADDR[26]	ADDR[25]	64 M	4KB
128 Mbitc			2					128 M	4KB
		8 M x 16	1	12	9	ADDR[25]	ADDR[24]	32 M	2KB
			2					64 M	2KB
		32 M x 8	1	13	10	ADDR[27]	ADDR[26]	128 M	4KB
256 Mbit			2					256 M	4KB
		16 M x 16	1	13	9	ADDR[26]	ADDR[25]	64 M	2KB
			2					128 M	2KB
		64 M x 8	1	13	11	ADDR[28]	ADDR[27]	256 M	8KB
512 Mbit			2					512 M	8KB
		32 M x 16	1	13	10	ADDR[27]	ADDR[26]	128 M	4KB
			2					256 M	4KB
		128 M x 8	1	14	11	ADDR[29]	ADDR[28]	512 M	8KB
1 Gbitc			2					1 G	8KB
		64 M x 16	1	14	10	ADDR[28]	ADDR[27]	256 M	4KB
			2					512 M	4KB

a.Table indicates 32-bit wide memory subsystem sizes.

b.Table indicates 32-bit wide memory page sizes.

c.Supported with DDR SDRAM only

Table 26.	Supported DDRII 32-bit SDRAM Configurations
DDR SDRAM		DDR SDRAM	# of	Address Size		Leaf Select		Total	Page
								Memory
Technology		Arrangement	Banks						Size
				Row	Column	DDR_BA[1]	DDR_BA[0]	Size
		32M x 8	1	13	10	ADDR[27]	ADDR[26]	128MB	4KB
256 Mbit			2					256MB	4KB
		16M x16	1	13	9	ADDR[26]	ADDR[25]	64MB	2KB
			2					128MB	2KB
		64M x 8	1	14	10	ADDR[28]	ADDR[27]	256MB	4KB
512 Mbit			2					512MB	4KB
		32M x16	1	13	10	ADDR[27]	ADDR[26]	128MB	4KB
			2					256MB	4KB

Table 27.	Supported DDRI 16-bit SDRAM Configurations
DDR SDRAM		DDR SDRAM	# of	Address Size		Leaf Select		Total	Page
								Memory
Technology		Arrangement	Banks	Row	Column	DDR_BA[1]	DDR_BA[0]	Size	Size
128 Mbit		8M x16	1	12	9	ADDR[23]	ADDR[22]	16MB	1KB

Intel® IXP43X Product Line of Network Processors
HDG	April 2007
74	Document Number: 316844; Revision: 001US