CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U15195EJ5V0UD
488
(9) Clocked serial interface initial transmit buffer registers 0, 1 (SOTBF0, SOTBF1)
The SOTBFn register is a 16-bit buffer register that stores initial transmission data in the repeat transfer mode
(n = 0, 1).
The transmission operation is not started even if data is written to the SOTBFn register.
These registers can be read/written in 16-bit units.
Caution Access the SOTBFn register only when the 16-bit data length has been set (CCL bit of
CSIMn register = 1), and only in the idle state (CSOTn bit of CSIMn register = 0). If the
SOTBFn register is accessed during data transfer, the data cannot be guaranteed.
14
SOTBF
14
13
SOTBF
13
12
SOTBF
12
2
SOTBF
2
3
SOTBF
3
4
SOTBF
4
5
SOTBF
5
6
SOTBF
6
7
SOTBF
7
8
SOTBF
8
9
SOTBF
9
10
SOTBF
10
11
SOTBF
11
15
SOTBF
15
1
SOTBF
1
0
SOTBF
0
14
SOTBF
14
13
SOTBF
13
12
SOTBF
12
2
SOTBF
2
3
SOTBF
3
4
SOTBF
4
5
SOTBF
5
6
SOTBF
6
7
SOTBF
7
8
SOTBF
8
9
SOTBF
9
10
SOTBF
10
11
SOTBF
11
15
SOTBF
15
1
SOTBF
1
0
SOTBF
0
SOTBF0
Address
FFFFF908H
After reset
0000H
SOTBF1
Address
FFFFF918H
After reset
0000H
Bit position
Bit name
Function
15 to 0
SOTBF15 to
SOTBF0
Stores initial transmission data in repeat transfer mode.
Содержание PD703114
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