r5s77631ay266bgv Renesas Electronics Corporation., r5s77631ay266bgv Datasheet - Page 1821

• Manufacturer Part Number: r5s77631ay266bgv
• Description: Renesas 32-bit Risc Microcomputer Superhtm Risc Engine Family Sh-4a Series
• Manufacturer: Renesas Electronics Corporation.

40.2.43 Pin Select Register 4 (PSEL4)
PSEL4 is a 16-bit readable/writable register that selects the functions of the Port I (PTI) and Port
O (PTO) pins multiplexed with “other function”, and also selects the function of the
IOIS16/TCLK pin and the REF125CK/HAC_BITCLK pin.
When using the pins with “other function” assigned, set PSEL4 and then set the corresponding
port control register to select “other function”.
Initial value:
Bit
15
14
13
12
R/W:
Bit:
PTSEL4F PTSEL4E PTSEL4D
R/W
Bit Name
PTSEL4D

PTSEL4F
PTSEL4E
15
0
R/W
14
0
R/W
13
0
Initial
value
0
0
0
0
12
—
R
0
PTSEL4B
R/W
R/W
R/W
R/W
R/W
R
11
0
R/W
10
PTSEL4[10:9]
0
Description
Selects the function of the IOIS16/TCLK pin.
0: IOIS16 function is selected
1: TCLK function is selected
When the IOIS16 function is selected, this bit should be
set to the initial value.
Do not select the IOIS16 function after the TCLK function
is selected.
Selects the function of the REF125CK/HAC_BITCLK pin.
0: REF125CK function is selected
1: HAC_BITCLK function is selected
Selects the pin for DREQ1
0: Input from PTL5 is used as DREQ1
1: Input from PTO5 is used as DREQ1
Reserved
This bit is always read as 0, and the write value should
always be 0.
R/W
9
0
PTSEL48
R/W
8
0
—
R
7
0
Rev. 1.00 Oct. 01, 2007 Page 1755 of 1956
PTSEL46
R/W
6
0
Section 40 General Purpose I/O (GPIO)
R/W
PTSEL4[5:4]
5
0
R/W
4
0
R/W
PTSEL4[3:2]
3
0
REJ09B0256-0100
R/W
2
0
R/W
PTSEL4[1:0]
1
0
R/W
0
0