SH7764 Datasheet, PDF (1421/1752 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 27 General Purpose I/O (GPIO)
27.2.9 Port I Control Register (PTIO_I)
PTIO_I is a 16-bit readable/writable register that controls each pin function and input pull-up
MOS.
Bit: 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0





 PTIO_I4[1:0] PTIO_I3[1:0] PTIO_I2[1:0] PTIO_I1[1:0] PTIO_I0[1:0]
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
R/W: R
R
R
R
R
R R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Bit
Bit Name
15 to 10 
9, 8
PTIO_I4[1:0]
7, 6
PTIO_I3[1:0]
5, 4
PTIO_I2[1:0]
Initial Value R/W
All 0
R
00
R/W
00
R/W
00
R/W
Description
Reserved
These bits are always read as 0. The write
value should always be 0.
PTI4 Mode
00: Other functions (LCD_DATA7, DG1, and
BT_DATA7)
01: Port output
10: Port input (Pull-up MOS: Off)
11: Port input (Pull-up MOS: On)
PTI3 Mode
00: Other functions (LCD_DATA6, DG0, and
BT_DATA6)
01: Port output
10: Port input (Pull-up MOS: Off)
11: Port input (Pull-up MOS: On)
PTI2 Mode
00: Other functions (LCD_DATA5, DB5, and
BT_DATA5)
01: Port output
10: Port input (Pull-up MOS: Off)
11: Port input (Pull-up MOS: On)
Rev. 1.00 Nov. 22, 2007 Page 1365 of 1692
REJ09B0360-0100