SH7080 Datasheet, PDF (1251/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 22 I/O Ports
22.4.1 Register Descriptions
Port D is a 16-bit input/output port in the SH7083 and SH7084; a 32-bit input/output port in the
SH7085 and SH7086. Port D has the following registers. For details on register addresses and
register states during each processing, refer to section 27, List of Registers.
Table 22.7 Register Configuration
Register Name
Port D data register H
Port D data register L
Port D port register H
Port D port register L
Abbrevia-
tion
R/W Initial Value Address
Access Size
PDDRH
R/W H'0000
H'FFFFD280 8, 16, 32
PDDRL
R/W H'0000
H'FFFFD282 8, 16
PDPRH
R
H'xxxx
H'FFFFD29C 8, 16, 32
PDPRL
R
H'xxxx
H'FFFFD29E 8, 16
22.4.2 Port D Data Registers H and L (PDDRH and PDDRL)
The port D data registers H and L (PDDRH and PDDRL) are 16-bit readable/writable registers
that store port D data. Bits PD15DR to PD0DR correspond to pins PD15 to PD0 (multiplexed
functions omitted here) in the SH7083 and SH7084. Bits PD31DR to PD0DR correspond to pins
PD31 to PD0 (multiplexed functions omitted here) in the SH7085 and SH7086.
When a pin function is general output, if a value is written to PDDRH or PDDRL, that value is
output directly from the pin, and if PDDRH or PDDRL is read, the register value is returned
directly regardless of the pin state.
When a pin function is general input, if PDDRH or PDDRL is read, the pin state, not the register
value, is returned directly. If a value is written to PDDRH or PDDRL, although that value is
written into PDDRH or PDDRL, it does not affect the pin state. Table 22.8 summarizes port D
data register read/write operations.
Rev. 3.00 May 17, 2007 Page 1193 of 1582
REJ09B0181-0300