M16C30_02 Datasheet, PDF (106/178 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Clock synchronous serial I/O mode
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
UARTi transmit/receive mode registers
b7 b6 b5 b4 b3 b2 b1 b0
0
001
Symbol
UiMR(i=0,1)
Address
When reset
03A016, 03A816
0016
Bit symbol
Bit name
Function
SMD0
SMD1
SMD2
CKDIR
STPS
PRY
PRYE
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
1 : External clock (Note)
Invalid in clock synchronous serial I/O mode
SLEP 0 (Must always be “0” in clock synchronous serial I/O mode)
Note : Set the corresponding port direction register to “0”.
RW
UART2 transmit/receive mode register
b7 b6 b5 b4 b3 b2 b1 b0
0
001
Symbol
U2MR
Address
037816
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
1 : External clock (Note 2)
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 set to “0”.
Note 2: Set the corresponding port direction register to “0”.
RW
Figure 1.16.10. UARTi transmit/receive mode register in clock synchronous serial I/O mode
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