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CHAPTER 5 PORT FUNCTIONS
User’s Manual U15109EJ3V0UD
190
(3) Block diagram (port 17)
Figure 5-20. Block Diagram of P170 to P175
WR
PM
WR
PORT
RD
Selector
Output latch
(P17n)
PM17n
PM17
Internal bus
P170
P171
P172
P173
P174
P175
Remarks 1.
PM17: Port 17 mode register
RD:
Port 17 read signal
WR:
Port 17 write signal
2.
n = 0 to 5