NEC PD78081(A) User Manual page 172

(b) Asynchronous serial interface mode register (ASIM)
ASIM is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets ASIM to 00H.
Symbol
7 6 5
ASIM TXE RXE PS1
CHAPTER 11 SERIAL INTERFACE CHANNEL 2
4 3 2 1
PS0 CL SL ISRM SCK
0 Address After Reset
FF70H 00H
RXE Receive Operation Control
0 Receive operation stopped
1 Receive operation enabled
TXE Transmit Operation Control
0 Transmit operation stopped
1 Transmit operation enabled
R/W
R/W
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