Section 12 Serial Communication Interface (SCI)
Rev. 3.00 Sep. 27, 2007 Page 430 of 758
REJ09B0243-0300
12.3.9
Serial Direction Control Register (SCSDCR)
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.
Bit:
Initial value:
R/W:
7
6
5
4
3
2
1
0
1
1
1
1
0
0
1
0
R
R
R
R
R/W
R
R
R
-
-
-
-
DIR
-
-
-
Bit Bit
Name
Initial
Value
R/W Description
7 to 4
All
1
R
Reserved
These bits are always read as 1. The write value should
always be 1.
3
DIR
0
R/W
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
Receive data is stored in SCRDR in LSB-first
1: SCTDR contents are transmitted in MSB-first order
Receive data is stored in SCRDR in MSB-first
2
0 R
Reserved
This bit is always read as 0. The write value should
always be 0.
1
1 R
Reserved
This bit is always read as 1. The write value should
always be 1.
0
0 R
Reserved
This bit is always read as 0. The write value should
always be 0.
Summary of Contents for SH7124 R5F7124
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Page 8: ...Rev 3 00 Sep 27 2007 Page viii of xx ...
Page 36: ...Section 1 Overview Rev 3 00 Sep 27 2007 Page 16 of 758 REJ09B0243 0300 ...
Page 68: ...Section 2 CPU Rev 3 00 Sep 27 2007 Page 48 of 758 REJ09B0243 0300 ...
Page 108: ...Section 5 Exception Handling Rev 3 00 Sep 27 2007 Page 88 of 758 REJ09B0243 0300 ...
Page 166: ...Section 7 User Break Controller UBC Rev 3 00 Sep 27 2007 Page 146 of 758 REJ09B0243 0300 ...
Page 724: ...Section 20 List of Registers Rev 3 00 Sep 27 2007 Page 704 of 758 REJ09B0243 0300 ...
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