Renesas M16C Series User Manual

Clock-Asynchronous Serial I/O
M30240 Group
Rev.1.00 Sep 24, 2003 Page 220 of 360
Figure 2.69: Set-up procedure of transmission in UART mode (compliant with SIM interface) (1)
Setting UART2 transmit/receive control register 0
UART2 transmit/receive control register 0 [Address 037C 16]
U2C0
Must be fixed to “0” in UART mode
b7 b0
100
BRG count source select bit
0 0 : f
1 is selected
0 1 : f
8 is selected
1 0 : f
32 is selected
1 1 : Inhibited
b1 b0
Valid when bit 4 = “0”
CTS/RTS disable bit
1 : CTS/RTS function enabled
Transmit register empty flag
0 : Data present in transmit register (during transmission)
1 : No data present in transmit register (transmission completed)
Transfer format select bit
Must be “0” (LSB first) in direct format
Continued to the next page
Setting UART2 transmit/receive mode register
UARTi transmit/receive mode register [Address 0378 16]
U2MR
Stop bit length select bit
0 : One stop bit
b7 b0
01010
Odd/even parity select bit (Valid when bit 6 = “1”)
Must be “1” (even parity) in direct format
Parity enable bit
1 : Parity enabled
T
XD, R XD I/O polarity reverse bit
Usually set to “0”
Serial I/O mode select bit
1 0 1 : Transfer data 8 bits long
b2 b1 b0
011
Setting UART2 transmit/receive control register 1
UART2 transmit/receive control register 1 [Address 037D 16]
U2C1
UART2 transmit interrupt cause select bit
1 : Transmission completed (TXEPT = 1)
Error signal output enable bit
1 : Output enabled
b7 b0
0
Invalid in UART mode
Data logic select bit
Must be “0” (no reverse) in direct format
11
Must be fixed to “0” in UART mode

Renesas M16C Series Specifications

General

Brand	Renesas
Model	M16C Series
Category	Computer Hardware
Language	English