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.

P2MSEL2

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.