Hitachi H8S/2678 Series Reference Manual page 338

*
P8n
WDDR8: Write to P8DDR
WDR8: Write to P8DR
RPOR8: Read port 8
RDR8: Read P8DR
n = 4 or 5
Figure 5.43 Port 8 Block Diagram (c) (Pins P84 and P85)
Modes 1, 2, 4, 5, 6
Mode 7
Note: * Output enable signal
Priority order: Modes 1, 2, 4, 5, 6, 7 (EXPE = 1)
Reset
R
Q D
P8nDDR
C
WDDR8
Reset
R
Q D
P8nDR
C
System controller
WDR8
EXPE
EXDMA controller
EXDMA transfer acknowledge
EXDMA transfer acknowledge
enable
RDR8
RPOR8
Interrupt controller
ITSn
IRQn
EXDMAC > DR
Mode 7 (EXPE = 0)
DR
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