Renesas M16C Series User Manual

Clock-Asynchronous Serial I/O
M30240 Group
Rev.1.00 Sep 24, 2003 Page 206 of 360
Figure 2.58: UARTi related registers (2)
UARTi transmit/receive mode register
Symbol Address
When reset
UiMR(i=0,1) 03A0
16, 03A816
00
16
b7 b6 b5 b4 b3 b2 b1 b0
Bit name
Bit
symbol
WR
Must be fixed to 001
0 0 0 : Serial I/O invalid
0 1 0 : Inhibited
0 1 1 : Inhibited
1 1 1 : Inhibited
b2 b1 b0
CKDIR
SMD1
SMD0
Serial I/O mode select bit
SMD2
Internal/external clock
select bit
STPS
PRY
PRYE
SLEP
Parity enable bit
0 : Internal clock
1 : External clock
Stop bit length select bit
Odd/even parity select bit
Sleep select bit
0 : One stop bit
1 : Two stop bits
0 : Parity disabled
1 : Parity enabled
0 : Sleep mode deselected
1 : Sleep mode selected
1 0 0 : Transfer data 7 bits long
1 0 1 : Transfer data 8 bits long
1 1 0 : Transfer data 9 bits long
0 0 0 : Serial I/O invalid
0 1 0 : Inhibited
0 1 1 : Inhibited
1 1 1 : Inhibited
b2 b1 b0
0 : Internal clock
1 : External clock
Invalid
Valid when bit 6 = “1”
0 : Odd parity
1 : Even parity
Invalid
Invalid
Must always be “0”
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
UART2 transmit/receive mode register
Symbol Address
When reset
U2MR 0378
16
00
16
b7 b6 b5 b4 b3 b2 b1 b0
Bit name
Bit
symbol
WR
Must be fixed to 001
0 0 0 : Serial I/O invalid
0 1 0 :
0 1 1 : Inhibited
1 1 1 : Inhibited
b2 b1 b0
CKDIR
SMD1
SMD0
Serial I/O mode select bit
SMD2
Internal/external clock
select bit
STPS
PRY
PRYE
IOPOL
Parity enable bit
0 : Internal clock
1 : External clock
Stop bit length select bit
Odd/even parity select bit
TxD, RxD I/O polarity
reverse bit
0 : One stop bit
1 : Two stop bits
0 : Parity disabled
1 : Parity enabled
0 : No reverse
1 : Reverse
Usually set to “0”
1 0 0 : Transfer data 7 bits long
1 0 1 : Transfer data 8 bits long
1 1 0 : Transfer data 9 bits long
0 0 0 : Serial I/O invalid
0 1 0 : Inhibited
0 1 1 : Inhibited
1 1 1 : Inhibited
b2 b1 b0
Invalid
Valid when bit 6 = “1”
0 : Odd parity
1 : Even parity
Invalid
Invalid
0 : No reverse
1 : Reverse
Usually set to “0”
Function
(During UART mode)
Function
(During clock synchronous
serial I/O mode)
Must always be set to "0"
Inhibited

Renesas M16C Series Specifications

General

Brand	Renesas
Model	M16C Series
Category	Computer Hardware
Language	English