SH7261 datasheet(1104/1348 Pages) RENESAS

1104 / 1348 page

Section 25 Pin Function Controller (PFC)

Rev. 2.00 Sep. 07, 2007 Page 1072 of 1312

REJ09B0320-0200

25.1.2

Port A Control Registers 1 to 8 (PACR1 to PACR8)

PACR1 to PACR8 are 16-bit readable/writable registers that select the functions of the

multiplexed port A pins. When PINT3B to PINT0B are selected, do not set A input for the same

interrupt.

PACR8 and PACR7 are initialized to H'0000 by a power-on reset or by switching to deep standby

mode. PACR1 to PACR6 are initialized to H'1111 by a power-on reset or by switching to deep

standby mode. These registers are not initialized either by a manual reset or by switching to sleep

mode or software standby mode.

(1)

Port A Control Register 8 (PACR8)

9876543210

Bit:

Initial value:

R/W:

0000000000000000

R/W

—

PA31MD[1:0]

PA30MD[1:0]

PA29MD[1:0]

PA28MD[1:0]

——

Bit

Bit Name

Initial

Value

R/W

Description

15, 14

—

All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

13, 12

PA31MD

[1:0]

R/W

PA31 Mode

These bits control the function of the PA31/CRx1/

DTEND0 pin.

00: PA31 I/O (port)

01: CRx1 input (RCAN-ET)

10: DTEND0 output (DMAC)

11: Setting prohibited

11, 10

—

All 0

Reserved

These bits are always read as 0. The write value

should always be 0.

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