Access Timing - Nintendo 1504166 - Game Boy Advance SP Edition Console Programming Manual

AGB Programming Manual

3.3.1 Access Timing

The following timing charts illustrate Game Pak ROM access with 3 wait
cycles on the first access and 1 wait cycle on the second.
1) Sequential Access
System Clock
16.78 MHz
Wait Cycles
AD Bus
2) Random Access
System Clock
16.78 MHz
Wait Cycles
AD Bus
©1999 - 2001 Nintendo of America Inc.
wait wait wait
Address
1st Access
(3 wait cycles)
wait wait wait
Address
1st Access
(3 wait cycles)
23
wait wait
Data Data
2nd Access 3rd Access
(1 wait cycle) (1 wait cycle)
wait wait wait
Data Address
1st Access
(3 wait cycles)
AGB Memory
Data
Data
D.C.N. AGB-06-0001-002B4