Hitachi H8/3692 ユーザーズマニュアル
Rev. 1.0, 07/01, page 112 of 372
9.1.1
Port Mode Register 1(PMR1)
PMR1 switches the functions of pins in port 1 and port 2.
Bit
Bit Name
Initial Value R/W
Description
7
IRQ3
0
R/W
P17/
IRQ3
/TRGV Pin Function Switch
This bit selects whether pin P17/
IRQ3
/TRGV is used as
P17 or as
IRQ3
/TRGV.
0: P17 I/O port
1:
IRQ3
/TRGV input pin
6
IRQ2
0
R/W
P16/
IRQ2
Pin Function Switch
This bit selects whether pin P16/
IRQ2
is used as P16 or as
IRQ2
.
0: P16 I/O port
1:
IRQ2
input pin
5
IRQ1
0
R/W
P15/
IRQ1
Pin Function Switch
This bit selects whether pin P15/
IRQ1
is used as P15 or as
IRQ1
.
0: P15 I/O port
1:
IRQ1
input pin
4
IRQ0
0
R/W
P14/
IRQ0
Pin Function Switch
This bit selects whether pin P14/
IRQ0
is used as P14 or as
IRQ0
.
0: P14 I/O port
1:
IRQ0
input pin
3
2
−
−
−
1
1
−
−
−
Reserved
These bits are always read as 1 and cannnot be modified.
1
TXD
0
R/W
P22/TXD Pin Function Switch
This bit selects whether pin P22/TXD is used as P22 or as
TXD.
TXD.
0: P22 I/O port
1: TXD output pin
0
TMOW
0
R/W
P10/TMOW Pin Function Switch
This bit selects whether pin P10/TMOW is used as P10 or
as TMOW.
as TMOW.
0: P10 I/O port
1: TMOW output pin