M16C6KA_15 Datasheet, PDF (97/270 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER Description

M16C/6KA Group
Clock synchronous serial I/O mode
UART1 transmit/receive mode registers
b7 b6 b5 b4 b3 b2 b1 b0
001
Symbol
U1MR
Address
03A816
When reset
0016
Bit symbol
Bit name
Function
RW
SMD0
SMD1
SMD2
CKDIR
STPS
PRY
PRYE
IOPOL
Serial I/O mode selection bits ^{b2 b1 b0}
0 0 1 : Clock synchronous serial
I/O mode
Internal/external clock
selection bit
0 : Internal clock
1 : External clock (Note 1)
Invalid in clock synchronous serial I/O mode
TxD, RxD I/O polarity
reverse bit (Note 1)
0 : No reverse
1 : Reverse
Note 1: Usually sent to "0".
Note 2: The corresponding port direction register should be "0".
Fig.GA-8 UART1 transmit/receive mode register in clock synchronous serial I/O mode
Rev.1.00 Jul 16, 2004 page 95 of 266
REJ03B0100-0100Z