ARM ARM DUI 0224I manual About memory expansion, Figure E-1 Dynamic memory board block diagram

Memory Expansion Boards

E.1 About memory expansion

You can fit static and dynamic memory expansion boards to the PB926EJ-S:

•There are five chip select signals available on the static expansion board. Each of these can select 64MB of SRAM.

•There are 3 chip select signals available on the dynamic expansion board. Each of these can select 128MB of SDRAM.

The block diagrams for typical memory boards are shown in Figure E-1 and Figure E-2 on page E-3.

Note

Figure E-1 and Figure E-2 on page E-3 are examples only. Different expansion boards might have different features. For example, the links selecting which chip select to use might be omitted.

See the documentation provided with your memory board for details on signals and link options.

	DQ[31:0]
J13	A[14:0] and control signals
connector			Dynamic
			memory
	nDYCS[3:1]		Chip select
Expansion			links
	SBSCL
	SBSDA	E2PROM

Figure E-1 Dynamic memory board block diagram

E-2 Copyright © 2003-2010 ARM Limited. All rights reserved. ARM DUI 0224I