SH7137 Datasheet, PDF (536/1160 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 12 Port Output Enable (POE)
12.3.6 Software Port Output Enable Register (SPOER)
SPOER is an 8-bit readable/writable register that controls high-impedance state of the pins.
Bit: 7
6
5
4
3
2
1
0
-
-
-
-
-
MTU2S MTU2 MTU2
HIZ CH0HIZ CH34HIZ
Initial value: 0
0
0
0
0
0
0
0
R/W: R
R
R
R
R R/W R/W R/W
Bit Bit Name
7 to 3 
Initial
value
All 0
2
MTU2SHIZ
0
1
MTU2CH0HIZ 0
R/W
R
R/W
R/W
Description
Reserved
These bits are always read as 0. The write value
should always be 0.
MTU2S Output High-Impedance
This bit specifies whether to place the large current
pins for the MTU2S in the high-impedance state.
0: Does not place the pins in the high-impedance
state
[Clearing conditions]
• Power-on reset
• By writing 0 to MTU2SHIZ after reading
MTU2SHIZ = 1
1: Places the pins in the high-impedance state
[Setting condition]
• By writing 1 to MTU2SHIZ
MTU2 Channel 0 Output High-Impedance
This bit specifies whether to place the pins for
channel 0 in the MTU2 in the high-impedance state.
0: Does not place the pins in the high-impedance
state
[Clearing conditions]
• Power-on reset
• By writing 0 to MTU2CH0HIZ after reading
MTU2CH0HIZ = 1
1: Places the pins in the high-impedance state
[Setting condition]
• By writing 1 to MTU2CH0HIZ
Rev. 2.00 Sep. 10, 2008 Page 510 of 1130
REJ09B0402-0200