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Chapter 13
Serial Interface Function
Preliminary User’s Manual U15839EE1V0UM00
(10) Clocked serial interface initial transmission buffer registers Low (SOTBFL0 to SOTBFL2)
The SOTBFLn register is an 8-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 SOTBFLn register.
These registers can be read/written in 8-bit units.
The SOTBFLn register is the same as the lower bytes of the SOTBFn register.
Figure 13-31:
Clocked Serial Interface Initial Transmission Buffer Registers Low
(SOTBFL0 to SOTBFL2)
Caution:
Access the SOTBFLn register only when the 8-bit data length has been set (CCL bit
of CSIM0 register = 0), and only in the idle state (CSOT bit of CSIMn register = 0). If
the SOTBFLn register is accessed during data transfer, the data cannot be
guaranteed.
7
6
5
4
3
2
1
0
Address
Initial
value
SOTBFL0
SOTBF7
SOTBF6
SOTBF5
SOTBF4
SOTBF3
SOTBF2
SOTBF1
SOTBF0
FFFF FD08H
00H
SOTBFL1
SOTBF7
SOTBF6
SOTBF5
SOTBF4
SOTBF3
SOTBF2
SOTBF1
SOTBF0
FFFF FD48H
00H
SOTBFL2
SOTBF7
SOTBF6
SOTBF5
SOTBF4
SOTBF3
SOTBF2
SOTBF1
SOTBF0
FFFF FD88H
00H
Bit Position
Bit Name
Function
7 to 0
SOTBF7 to
SOTBF0
Store initial transmission data in repeat transfer mode.
Summary of Contents for mPD703128
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