Datasheet

Appendix C I/O Port Block Diagrams
Rev. 4.00 Jun 06, 2006 page 969 of 1004
REJ09B0301-0400
C.3 Port 3 Block Diagram
R
QD
D
P3nPCR
C
Reset
R
QD
P3nDR
C
Reset
WP3P
R
Q
P3nDDR
C
Reset
WP3D
CS
IOR
WP3
CS
IOW
P3n
RP3P
RP3
Mode 2, 3
Mode 1
Hardware
standby
External address
write
EXPE
HI12E
Internal data bus
Host interface data bus
External address read
Legend:
WP3P: Write to P3PCR
WP3D: Write to P3DDR
WP3: Write to port 3
RP3P: Read P3PCR
RP3: Read port 3
Note: n = 0 to 7
Figure C.5 Port 3 Block Diagram