NEC switch User Manual
Page 67
CHAPTER 4 PORT FUNCTIONS
User’s Manual U12978EJ3V0UD
67
Figure 4-9. Block Diagram of P26
RD
V
DD0
P26
WR
POM1
WR
PU0
WR
PORT
WR
PM
Output latch
(P26)
PM26
PU02
P-ch
P-ch
N-ch
V
DD0
POM126
Internal bus
Selector
POM1:
Port output mode register 1
PU0:
Pull-up resistor option register 0
PM:
Port mode register
RD:
Port 2 read signal
WR:
Port 2 write signal
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