
R8C/14 Group, R8C/15 Group 15. Clock Synchronous Serial I/O with Chip Select (SSU)
Rev.2.10 Jan 19, 2006 Page 143 of 253
REJ09B0164-0210
Figure 15.3 SSCRL Register
SS Control Register L
(4)
Symbol Address After Reset
SSCRL
00B9h 01111101b
Bit Symbol Bit Name Function RW
NOTES :
1.
2.
3.
4. Refer to
20.6.1 Access Registers Associated with SSU
for accessing registers associated with SSU.
—
Do not write to the SOL bit during the data transfer.
The data output after the serial data is output can be changed when writing to the SOL bit before or after transfer.
Set the SOLP bit to “0” and write to the SOLP and SOL bits by the MOV instruction when writing to the SOL bit.
SSCRH, SSCRL, SSMR, SSER, SSSR, SSMR2, SSTDR and SSRDR registers.
SOL
Serial Data Output
Value Setting Bit
When read,
0 : The last bit of the serial data output is set to “L”
1 : The last bit of the serial data output is set to “H”
When write,
(2,3)
0 : The data outputs “L” after the serial data output
1 : The data outputs “H” after the serial data output
RW
—
(b6)
Nothing is assigned. When write, set to “0”.
When read, its content is “1”.
—
—
(b7)
Nothing is assigned. When write, set to “0”.
When read, its content is “0”.
—
(b3-b2)
Nothing is assigned. When write, set to “0”.
When read, its content is “1”.
—
SOLP
SOL Write Protect Bit
(2)
The output level can be changed by the SOL bit when
“0” w hen this bit is set to “0”.
Writing “1” is disabled. When read, its content is “1”.
RW
b7 b6 b5 b4 b3 b2 b1 b0
—
(b0)
—
Nothing is assigned. When write, set to “0”.
When read, its content is “1”.
SRES
SSU Control Part Reset
Bit
When this bit is set to “1”, the SSU control part and
SSTRSR register are reset.
The values of the registers
(1)
in the SSU register are
maintained.
RW
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