Renesas SH7781 用户手册
28. General Purpose I/O Ports (GPIO)
Rev.1.00 Jan. 10, 2008 Page 1412 of 1658
REJ09B0261-0100
REJ09B0261-0100
28.2.14
Port P Control Register (PPCR)
PPCR is a 16-bit readable/writable register that selects the pin function and controls the input pull-
up MOS.
up MOS.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
14
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PP0
MD0
PP0
MD1
PP1
MD0
PP1
MD1
PP2
MD0
PP2
MD1
PP3
MD0
PP3
MD1
PP4
MD0
PP4
MD1
PP5
MD0
PP5
MD1
—
—
—
—
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Bit:
Initial value:
R/W:
Bit Bit
Name
Initial
value R/W Description
value R/W Description
15 to 12
⎯ All
0
R/W
Reserved
These bits are always read as 0, and the write value
should always be 0.
should always be 0.
11
10
PP5MD1
PP5MD0
0
0
R/W
R/W
PP5 Mode
00: PCIC/DU module (
DEVSEL/DCLKOUT)*
When the bus mode is set to the local bus by the
bus mode pins (MODE11 and MODE12), port input
(pull-up MOS: On) is selected.
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)
9
8
PP4MD1
PP4MD0
0
0
R/W
R/W
PP4 Mode
00: PCIC/DU module (
STOP/CDE)*
When the bus mode is set to the local bus by the
bus mode pins (MODE11 and MODE12), port input
(pull-up MOS: On) is selected.
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)