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Hardware standby
P8
n
WP8D:
Write to P8DDR
WP8:
Write to port 8
RP8:
Read port 8
SSOE:
Software standby output port enable
Mode
6/7
Mode 1 to 5
Figure C.8 (b) Port 8 Block Diagram (Pin P8
Appendix C I/O Port Block Diagrams
SSOE
Software standby
External bus release
Reset
R
Q
D
P8 DDR
1
C
WP8D
Reset
R
Q
D
P8 DR
1
C
WP8
RP8
Rev. 4.00 Jan 26, 2006 page 893 of 938
Bus controller
CS
output
3
RAS
output
3
RAS
output enable
3
Area 3 DRAM
connection enable
Interrupt
controller
IRQ
input
1
)
1
REJ09B0276-0400
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