Renesas SH7781 User Manual
Page 1478
28. General Purpose I/O Ports (GPIO)
Rev.1.00 Jan. 10, 2008 Page 1448 of 1658
REJ09B0261-0100
Bit Bit
Name
Initial
value R/W Description
15 to 3
—
All 0
R/W
Reserved
These bits are always read as 0, and the write value
should always be 0.
2
P2MSEL2
0
R/W
Out of the modules RESET and INTC, selects the one
which uses the pin
MRESETOUT/IRQOUT.
0: Selects RESET
1: Selects INTC
1 P2MSEL1
0 R/W
Selects
the
pin group used by the SIOF.
0: Uses the SIOF pin selected by P1MSEL4 and 3.
(SIOF_SCK/HAC0_BITCLK/SSIO_CLK,
SIOF_MCLK/
HAC_RES,
SIOF_SYNC/HAC0_SYNC/SSIO_WS,
SIOF_RXD/HAC0_SDIN/SSIO_SCK,
SIOF_TXD/HAC0_SDOUT/SSIO_SDATA)
1: Uses the SIOF pin selected by P1MSEL12, 11, and
P1MSEL6 and 5.
(
DACK3/SCIF2_SCK/MMCDATA/SIOF_SCK,
DACK2/SCIF2_TXD/MMCCMD/SIOF_TXD,
SCIF2_RXD/SIOF_RXD, MODE5/SIOF_MCLK*,
MODE6/SIOF_SYNC*)
Note: At power-on reset by the
PRESET pin, MODE5
and MODE6 are selected.
0 P2MSEL0
0 R/W
Out of the modules PCIC and MMCIF, selects the one
which uses the pins
REQ3 and GNT3/MMCCLK.
0: PCIC
1: MMCIF
When 1 is selected, the
REQ3 pin is determined as
unused pin. Accordingly, set bit 3 (PE3PUPR) of the
port E pull-up control register to B'1.