NEC UPD703116 User Manual page 490

(10) Clocked serial interface initial transmit buffer registers L0, L1 (SOTBFL0, SOTBFL1)
The SOTBFLn register is an 8-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 SOTBFLn register.
These registers can be read/written in 8-bit or 1-bit units.
The SOTBFLn register is the same as the lower bytes of the SOTBFn register.
Caution Access the SOTBFLn register only when the 8-bit data length has been set (CCL bit of
CSIMn register = 0), and only in the idle state (CSOTn bit of CSIMn register = 0). If the
SOTBFLn register is accessed during data transfer, the data cannot be guaranteed.
7
SOTBFL0 SOTBF7 SOTBF6
7
SOTBFL1 SOTBF7 SOTBF6
Bit position Bit name
7 to 0 SOTBF7 to
SOTBF0
490
CHAPTER 10 SERIAL INTERFACE FUNCTION
6 5 4
SOTBF5 SOTBF4 SOTBF3
6 5 4
SOTBF5 SOTBF4 SOTBF3
Stores initial transmission data in repeat transfer mode.
User's Manual U14492EJ5V0UD
3 2 1
SOTBF2 SOTBF1 SOTBF0
3 2 1
SOTBF2 SOTBF1 SOTBF0
Function
0 Address Initial value
FFFFF908H 00H
0 Address Initial value
FFFFF918H 00H