r5f71374an80fpv Renesas Electronics Corporation., r5f71374an80fpv Datasheet - Page 578

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

Section 14 Serial Communication Interface (SCI)
14.3.9
The DIR bit in the serial direction control register (SCSDCR) selects LSB-first or MSB-first
transfer. With an 8-bit data length, LSB-first/MSB-first selection is available regardless of the
communication mode.
Rev. 1.00 Sep. 21, 2007 Page 552 of 1124
REJ09B0402-0100
Bit
7 to 4 
3
2
1
0
Bit Name
DIR



Serial Direction Control Register (SCSDCR)
Initial
Value
All 1
0
0
1
0
Initial value:
R/W:
Bit:
R/W
R
R/W
R
R
R
R
7
1
-
R
6
1
-
Description
Reserved
These bits are always read as 1. The write value should
always be 1.
Data Transfer Direction
Selects the serial/parallel conversion format. Valid for
an 8-bit transmit/receive format.
0: SCTDR contents are transmitted in LSB-first order
1: SCTDR contents are transmitted in MSB-first order
Reserved
This bit is always read as 0. The write value should
always be 0.
Reserved
This bit is always read as 1. The write value should
always be 1.
Reserved
This bit is always read as 0. The write value should
always be 0.
R
5
1
-
Receive data is stored in SCRDR in LSB-first
Receive data is stored in SCRDR in MSB-first
R
4
1
-
R/W
DIR
3
0
R
2
0
-
R
1
1
-
R
0
0
-