Sdram/Fcram Interface Operation - Fujitsu FR60 Hardware Manual

CHAPTER 4 EXTERNAL BUS INTERFACE
4.9

SDRAM/FCRAM Interface Operation

This section describes the operations of the SDRAM/FCRAM interface.
■ SDRAM/FCRAM Interface
The CS6 and CS7 areas can be used as SDRAM/FCRAM space by setting the TYP3 to TYP0
bits in the area configuration register (ACR) to "100X
This section provides timing charts to describe the following operations of the SDRAM/FCRAM
interface.
• Burst read/write (Settings: Page hit, CAS latency "2")
• Single read/write (Settings: Page hit, CAS latency "3", auto-precharge OFF)
• Single read (Settings: Page miss, CAS latency "3", auto-precharge OFF)
• Single read/write (Settings: CAS latency "1", TYP 1001
• Auto-refresh
224
".
B
, auto-precharge ON)
B