SH7261 datasheet(1115/1348 Pages) RENESAS

1115 / 1348 page

Section 25 Pin Function Controller (PFC)

Rev. 2.00 Sep. 07, 2007 Page 1083 of 1312

REJ09B0320-0200

25.1.4

Port B Control Registers 1 to 8 (PBCR1 to PBCR8)

PBCR1 to PBCR8 are 16-bit readable/writable registers that select the functions of the

multiplexed port B pins. When IRQ7A to IRQ0A or PINT7A to PINT0A are selected, do not set B

input for the same interrupt.

PBCR1 and PBCR2 are initialized to H'1111 by a power-on reset or by switching to deep standby

mode. PBCR3 to PBCR8 are initialized to the values shown in table 25.8 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.

Table 25.8

Port B Control Register Initial Values

Initial Value

Area 0: 32-Bit Mode

Area 0: 16-Bit Mode

Area 0: 8-Bit Mode

PBCR5 to PBCR8

H'1111

H'0000

PBCR3, PBCR4

H'1111

H'0000

(1)

Port B Control Register 8 (PBCR8)

Bit:

Initial value:

R/W:

000

0/1*

000

0/1*

R/W

——

PB31MD[1:0]

PB30MD[2:0]

PB29MD[2:0]

PB28MD[2:0]

———

Note: * The initial value depends on the LSI’s operating mode.

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

PB31MD

[1:0]

00/01*

R/W

PB31 Mode

These bits control the function of the PB31/D31/

PINT7A pin.

00: PB31 I/O (port)

01: D31 I/O (BSC)

10: PINT7A input (INTC)

11: Setting prohibited

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