SH7785 Datasheet, PDF (1446/1692 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

28. General Purpose I/O Ports (GPIO)
28.2.16 Port R Control Register (PRCR)
PRCR is a 16-bit readable/writable register that selects the pin function and controls the input pull-
up MOS.
Bit:
Initial value:
R/W:
15
—
0
R/W
14
—
0
R/W
13
—
0
R/W
12
—
0
R/W
11
—
0
R/W
10
—
0
R/W
9
—
0
R/W
8
—
0
R/W
7
PR3
MD1
0
R/W
6
PR3
MD0
0
R/W
5
PR2
MD1
0
R/W
4
PR2
MD0
0
R/W
3
PR1
MD1
0
R/W
2
PR1
MD0
0
R/W
1
PR0
MD1
0
R/W
0
PR0
MD0
0
R/W
Initial
Bit
Bit Name value R/W Description
15 to 8 ⎯
All 0 R/W Reserved
These bits are always read as 0, and the write value
should always be 0.
7
PR3MD1 0
R/W PR3 Mode
6
PR3MD0 0
R/W 00: LBSC/PCIC module (WE7/CBE3)*
When the bus mode is set to DU via the bus-mode
pins (MODE11 and MODE12), port input (pull-up
MOS: On) is selected.
01: Port output
10: Port input (pull-up MOS: Off)
11: Port input (pull-up MOS: On)
5
PR2MD1 0
R/W PR2 Mode
4
PR2MD0 0
R/W 00: LBSC/PCIC module (WE6/CBE2)*
When the bus mode is set to DU via the bus-mode
pins (MODE11 and MODE12), port input (pull-up
MOS: On) is selected.
01: Port output
10: Port input (pull-up MOS: Off)
11: Port input (pull-up MOS: On)
Rev.1.00 Jan. 10, 2008 Page 1416 of 1658
REJ09B0261-0100