Renesas R5S72622 User Manual
Section 15 Serial Communication Interface with FIFO
Page 720 of 2108
R01UH0134EJ0400 Rev. 4.00
Sep
24,
2014
SH7262 Group, SH7264 Group
15.3.6
Serial Control Register (SCSCR)
SCSCR enables/disables the transmitter/receiver operation and interrupt requests, and selects the
transmit/receive clock source. The CPU can always read and write to SCSCR.
transmit/receive clock source. The CPU can always read and write to SCSCR.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R/W
R/W
R/W
R/W
R/W
R
R/W
R/W
Bit:
Initial value:
R/W:
-
-
-
-
-
-
-
-
TIE
RIE
TE
RE
REIE
-
CKE[1:0]
Bit Bit
Name
Initial
Value R/W
Value R/W
Description
15 to 8
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
always be 0.
7
TIE
0
R/W
Transmit Interrupt Enable
Enables or disables the transmit-FIFO-data-empty
interrupt (TXI) requested when the serial transmit data
is transferred from the transmit FIFO data register
(SCFTDR) to the transmit shift register (SCTSR), when
the quantity of data in the transmit FIFO register
becomes less than the specified number of
transmission triggers, and when the TDFE flag in the
serial status register (SCFSR) is set to1.
interrupt (TXI) requested when the serial transmit data
is transferred from the transmit FIFO data register
(SCFTDR) to the transmit shift register (SCTSR), when
the quantity of data in the transmit FIFO register
becomes less than the specified number of
transmission triggers, and when the TDFE flag in the
serial status register (SCFSR) is set to1.
0: Transmit-FIFO-data-empty interrupt request (TXI) is
disabled
1: Transmit-FIFO-data-empty interrupt request (TXI) is
enabled*
Note: * The TXI interrupt request can be cleared by
writing a greater quantity of transmit data
than the specified transmission trigger
number to SCFTDR and by clearing TDFE
to 0 after reading 1 from TDFE, or can be
cleared by clearing TIE to 0.
than the specified transmission trigger
number to SCFTDR and by clearing TDFE
to 0 after reading 1 from TDFE, or can be
cleared by clearing TIE to 0.