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Chapter 13
Serial Interface Function
Preliminary User’s Manual U15839EE1V0UM00
(9)
Clocked serial interface initial transmission buffer registers (SOTBF0 to SOTBF2)
The SOTBFn register is a 16-bit buffer register that stores initial transmission data in the repeat
transfer mode (n = 0 to 2).
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.
Figure 13-30:
Clocked Serial Interface Initial Transmission Buffer Registers
(SOTBF0 to SOTBF2)
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 (CSOT bit of CSIMn register = 0). If
the SOTBFn register is accessed during data transfer, the data cannot be guaranteed.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Address
Initial
value
SOTBF0 SOTBF15 SOTBF14 SOTBF13 SOTBF12 SOTBF11 SOTBF10 SOTBF9 SOTBF8 SOTBF7 SOTBF6 SOTBF5 SOTBF4 SOTBF3 SOTBF2 SOTBF1 SOTBF0 FFFF FD08H 0000H
SOTBF1 SOTBF15 SOTBF14 SOTBF13 SOTBF12 SOTBF11 SOTBF10 SOTBF9 SOTBF8 SOTBF7 SOTBF6 SOTBF5 SOTBF4 SOTBF3 SOTBF2 SOTBF1 SOTBF0 FFFF FD48H 0000H
SOTBF2 SOTBF15 SOTBF14 SOTBF13 SOTBF12 SOTBF11 SOTBF10 SOTBF9 SOTBF8 SOTBF7 SOTBF6 SOTBF5 SOTBF4 SOTBF3 SOTBF2 SOTBF1 SOTBF0 FFFF FD88H 0000H
Bit Position
Bit Name
Function
15 to 0
SOTBF15 to
SOTBF0
Stores initial transmission data in repeat transfer mode.
Summary of Contents for mPD703128
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