Memory Controller; Overview - Samsung S3C2500B User Manual

S3C2500B
5

MEMORY CONTROLLER

5.1 OVERVIEW

This Memory controller consists of Ext I/O Bank controller and SDRAM controller. Ext I/O Bank controller
supports ROM, SRAM and Flash memory. SDRAM controller support SDRAM.
The S3C2500B Memory controller has the following functions.
•
To provide the required memory control signals for external memory accesses. For example, if a master
block such as DMA controller or CPU generates an address that corresponds to a SDRAM bank, the SDRAM
controller generates the required SDRAM access signals.
•
To provide the required signals for bus traffic between the S3C2500B and ROM/SRAM and the external
I/O banks.
• •
To compensate for differences in bus width for data flowing between the external memory bus and the
internal data bus.
•
S3C2500B supports both little and big endians for external memory or I/O devices.
MEMORY CONTROLLER
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