r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 751

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

15.3.3
SCTSR transmits serial data. The SCIF loads transmit data from the transmit FIFO data register
(SCFTDR) into SCTSR, then transmits the data serially from the TxD pin, LSB (bit 0) first. After
transmitting one data byte, the SCIF automatically loads the next transmit data from SCFTDR into
SCTSR and starts transmitting again.
The CPU cannot read or write to SCTSR directly.
15.3.4
SCFTDR is a 16-byte FIFO register that stores data for serial transmission. When the SCIF detects
that the transmit shift register (SCTSR) is empty, it moves transmit data written in the SCFTDR
into SCTSR and starts serial transmission. Continuous serial transmission is performed until there
is no transmit data left in SCFTDR. The CPU can write to SCFTDR at all times.
When SCFTDR is full of transmit data (16 bytes), no more data can be written. If writing of new
data is attempted, the data is ignored.
SCFTDR is initialized to an undefined value by a power-on reset.
Transmit Shift Register (SCTSR)
Transmit FIFO Data Register (SCFTDR)
Initial value:
Initial value:
R/W:
R/W:
Bit:
Bit:
W
7
7
-
-
-
W
6
6
-
-
-
Section 15 Serial Communication Interface with FIFO (SCIF)
W
5
5
-
-
-
W
4
4
-
-
-
W
3
3
-
-
-
Rev. 2.00 Dec. 09, 2005 Page 727 of 1152
W
2
2
-
-
-
W
1
1
-
-
-
W
0
0
-
-
-
REJ09B0191-0200