43
1745D–ATARM–04-Nov-05
AT91M55800A
Figure 11-21. 1 Wait State, 16-bit Bus Width, Half-word Transfer
B
2
B
1
1 Wait State
MCK
A1 - A23
NCS
NRD
D0 - D15
Internal Bus
X X B
2
B
1
READ ACCESS
· Standard Protocol
NLB
NUB
· Early Protocol
B
2
B
1
NRD
D0 - D15
WRITE ACCESS
NWE
B
2
B
1
D0 - D15
· Byte Write/
Byte Select Option