AT91M40807_14 Datasheet, PDF (41/153 Pages) ATMEL Corporation – Fully Programmable External Bus Interface (EBI

AT91X40 Series
Figure 29. 0 Wait States, 8-bit Bus Width, Word Transfer
MCK
A0 - A23
ADDR
ADDR+1
ADDR+2
ADDR+3
NCS
READ ACCESS
· Standard Protocol
NRD
D0-D15
X B1
X B2
X B3
X B4
Internal Bus
· Early Protocol
NRD
X X X B1
X X B2 B1
X B3 B2 B1
B4 B3 B2 B1
D0 - D15
WRITE ACCESS
X B1
X B2
X B3
X B4
NWR0
NWR1
D0 - D15
X B1
X B2
X B3
X B4
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