SH7050 Datasheet, PDF (504/841 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH RISC engine Family/

Section 16 Pin Function Controller (PFC)
16.3.3 Port B IO Register (PBIOR)
Bit: 15
—
Initial value: 1
R/W: R
14 13 12 11 10 9 8 7
—
PB11 PB10 PB9
IOR IOR IOR
PB8
IOR
PB7
IOR
PB6
IOR
—
10000001
R R/W R/W R/W R/W R/W R/W R
6543210
—
PB5 PB4 PB3 PB2 PB1 PB0
IOR IOR IOR IOR IOR IOR
1000000
R R/W R/W R/W R/W R/W R/W
The port B IO register (PBIOR) is a 16-bit readable/writable register that selects the input/output
direction of the 12 pins in port B. Bits PB11IOR to PB0IOR correspond to pins PB11/A21/POD to
PB0/TO6. PBIOR is enabled when port B pins function as general input/output pins (PB11 to
PB0), and disabled otherwise. PBIOR bits 4 and 5 should be cleared to 0 when ATU clock input is
selected.
When port B pins function as PB11 to PB0, a pin becomes an output when the corresponding bit
in PBIOR is set to 1, and an input when the bit is cleared to 0.
PBIOR is initialized to H'C0C0 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
16.3.4 Port B Control Register (PBCR)
Bit: 15 14 13 12 11 10 9 8 7
—
PB11 PB11 PB10 PB9
MD1 MD0 MD MD
PB8
MD
PB7
MD
PB6
MD
—
Initial value: 1 0 0 0 0 0 0 0 1
R/W: R R/W R/W R/W R/W R/W R/W R/W R
6543210
—
PB5 PB4 PB3 PB2 PB1 PB0
MD MD MD MD MD MD
1000000
R R/W R/W R/W R/W R/W R/W
The port B control register (PBCR) is a 16-bit readable/writable register that selects the functions
of the 12 multiplex pins in port B.
PBCR is initialized to H'80C0 by a power-on reset (excluding a WDT power-on reset), and in
hardware standby mode. It is not initialized in software standby mode or sleep mode.
Bit 15—Reserved: This bit is always read as 1, and should only be written with 1.
Rev. 5.00 Jan 06, 2006 page 484 of 818
REJ09B0273-0500