M16C80 Datasheet, PDF (150/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
17. Clock synchronous serial I/O mode
UARTi transmit/receive mode registers
b7 b6 b5 b4 b3 b2 b1 b0
0
001
Symbol
UiMR(i=0,1)
Address
When reset
036016, 036816
0016
Bit symbol
Bit name
Function
RW
SMD0
SMD1
SMD2
CKDIR
STPS
PRY
PRYE
SLEP
Serial I/O mode select bit
b2 b1 b0
0 0 1 : Clock synchronous serial
I/O mode
Internal/external clock
select bit
0 : Internal clock (Note 1)
1 : External clock (Note 2)
Invalid in clock synchronous serial I/O mode
0 (Set to “0” in clock synchronous serial I/O mode)
Note 1: Select CLK output by the corresponding function select registers A, B and C.
Note 2: Set the corresponding function select register A to the I/O port.
UART2 transmit/receive mode register
b7 b6 b5 b4 b3 b2 b1 b0
0
001
Symbol
UiMR (i=2 to 4)
Address
033816, 032816, 02F816
When reset
0016
Bit symbol
SMD0
SMD1
SMD2
CKDIR
STPS
PRY
PRYE
IOPOL
Bit name
Serial I/O mode select bit
Function
b2 b1 b0
0 0 1 : Clock synchronous serial
I/O mode
Internal/external clock
select bit
0 : Internal clock (Note 2)
1 : External clock (Note 3)
Invalid in clock synchronous serial I/O mode
TxD, RxD I/O polarity
reverse bit (Note 1)
0 : No reverse
1 : Reverse
RW
Note 1: Usually set to “0”.
Note 2: Select CLK output by the corresponding function select registers A, B and C.
Note 3: Set the corresponding function select register A to the I/O port.
Figure 17.1 UARTi transmit/receive mode register in clock synchronous serial I/O mode
Rev.1.00 Aug. 02, 2005 ^{Page 139} of 329
REJ09B0187-0100