HD6417618 RENESAS [Renesas Technology Corp], HD6417618 Datasheet - Page 465

• Manufacturer Part Number: HD6417618
• Description: 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7618 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

16.1.1
PAIORH is a 16-bit readable/writable register that selects the input/output directions of the port A
pins. Bits PA25IOR to PA16IOR correspond to pins PA25 to PA16 (the pin name abbreviations
for multiplexed functions are omitted). PAIORH is enabled when a port A pin functions as a
general input/output (PA25 to PA16), otherwise, disabled.
Setting a bit in PAIORH to 1 makes the corresponding pin function as an output and clearing a bit
in PAIORH to 0 makes the pin function as an input.
Bits 15 to 10 in PAIORH are reserved. These bits are always read as 0. The write value should
always be 0.
The initial value of PAIORH is H'0000.
16.1.2
PACRH1 and PACRH2 are 16-bit readable/writable registers that select the pin functions for the
multiplexed port A pins.
• PACRH1
Bit
15 to 3
2
1
0
Port A IO Register H (PAIORH)
Port A Control Register H1 and H2 (PACRH1 and PACRH2)
Bit Name

PA25MD0

PA24MD0
Initial
Value
All 0
0
0
0
R/W
R
R/W
R
R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
PA25 Mode
Selects the function of pin PA25/A25.
0: PA25 input/output (port)
1: A25 output (BSC)
Reserved
This bit is always read as 0. The write value should
always be 0.
PA24 Mode
Selects the function of pin PA24/A24.
0: PA24 input/output (port)
1: A24 output (BSC)
Section 16 Pin Function Controller (PFC)
Rev. 6.00 Jun. 12, 2007 Page 433 of 610
REJ09B0131-0600