Notes On Using The External Bus Interface - Fujitsu FR60 Hardware Manual

4.13 Notes on Using the External Bus Interface

This section explains some notes when using the external bus interface.
■ Notes for Use
If settings are made so that the area (TYP3 to TYP0=0x0x
write strobe and the area (TYP3 to TYP0=0x1x
mixed, be sure to make the following setting in all areas that will be used:
• Set at least one read -> write idle cycle (other than setting AWR W07, W06=00
• Set at least one write recovery cycle (other than setting AWR W05, W04=00
However, if WR0 to WR3 are disabled (ROM only is connected) in the area (TYP3 to
TYP0=0x0x
apply. Also, the above restriction does not apply if both the address -> RD/WRn setup cycle
(W01=1) and RD/WRn -> address hold cycle (W00=1) are set in the area (TYP3 to
TYP0=0x1x
) where WR0 to WR3 are used as a write strobe, the above restriction does not
B
) where WE is used as a write strobe.
B
CHAPTER 4 EXTERNAL BUS INTERFACE
) where WR0 to WR3 are used as a
B
) where WR is used as a write strobe are
B
).
B
).
B
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