r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 576

• Manufacturer Part Number: r5f71374an80fpv
• Description: 32-bit Risc Microcomputer Superh?? Risc Engine Family
• Manufacturer: Renesas Electronics Corporation.

Section 14 Serial Communication Interface (SCI)
14.3.8
SCSPTR is an 8-bit register that controls input/output and data for the ports multiplexed with the
SCI function pins. Data to be output through the TXD pin can be specified to control break of
serial transfer. Through bits 3 and 2, data reading and writing through the SCK pin can be
specified. Bit 7 enables or disables RXI interrupts. The CPU can always read and write to
SCSPTR. When reading the value on the SCI pins, use the respective port register. For details,
refer to section 21, I/O Ports.
Rev. 1.00 Sep. 21, 2007 Page 550 of 1124
REJ09B0402-0100
Bit
7
6 to 4
3
Serial Port Register (SCSPTR)
Bit Name
EIO

SPB1IO
Initial value:
Initial
value
0
All 0
0
R/W:
Bit:
R/W
EIO
7
0
R/W
R/W

R/W
6
0
-
-
Description
Error Interrupt Only
Enables or disables RXI interrupts. While the EIO bit is
set to 1, the SCI does not request an RXI interrupt to
the CPU even if the RIE bit is set to 1.
0: The RIE bit enables or disables RXI and ERI
1: While the RIE bit is 1, only the ERI interrupt is sent to
Reserved
These bits are always read as 0. The write value should
always be 0.
Clock Port Input/Output in Serial Port
Specifies the input/output direction of the SCK pin in the
serial port. To output the data specified in the SPB1DT
bit through the SCK pin as a port output pin, set the C/A
bit in SCSMR and the CKE1 and CKE0 bits in SCSCR
to 0.
0: Does not output the SPB1DT bit value through the
1: Outputs the SPB1DT bit value through the SCK pin.
5
0
-
-
interrupts. While the RIE bit is 1, RXI and ERI
interrupts are sent to the INTC.
the INTC.
SCK pin.
4
0
-
-
SPB1IO SPB1DT SPB0IO SPB0DT
R/W
3
0
R/W
2
-
R/W
1
0
R/W
0
-