M16C6NK Datasheet, PDF (186/404 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6NK, M16C/6NM)
15. Serial Interface
Table 15.6 Registers to Be Used and Settings in UART Mode
Register
Bit
UiTB
0 to 8
UiRB
0 to 8
Set transmission data ⁽¹⁾
Reception data can be read ⁽¹⁾
Function
OER,FER,PER,SUM Error flag
UiBRG 0 to 7
Set a transfer rate
UiMR
SMD2 to SMD0 Set these bits to “100b” when transfer data is 7-bit long
Set these bits to “101b” when transfer data is 8-bit long
Set these bits to “110b” when transfer data is 9-bit long
CKDIR
Select the internal clock or external clock
STPS
Select the stop bit
PRY, PRYE
Select whether parity is included and whether odd or even
IOPOL
Select the TXD/RXD input/output polarity
UiC0
CLK0, CLK1
CRS
Select the count source for the UiBRG register
_______
_______
Select CTS or RTS to use
TXEPT
CRD
Transmit register empty flag
_______
_______
Enable or disable the CTS or RTS function
NCH
Select TXDi pin output mode
CKPOL
Set to “0”
UFORM
LSB first or MSB first can be selected when transfer data is 8-bit long. Set this
bit to “0” when transfer data is 7- or 9-bit long.
UiC1
TE
Set this bit to “1” to enable transmission
TI
Transmit buffer empty flag
RE
Set this bit to “1” to enable reception
RI
U2IRS ⁽²⁾
U2RRM ⁽²⁾
Reception complete flag
Select the source of UART2 transmit interrupt
Set to “0”
UiLCH
Set this bit to “1” to use inverted data logic
UiERE
Set to “0”
UiSMR 0 to 7
Set to “0”
UiSMR2 0 to 7
Set to “0”
UiSMR3 0 to 7
Set to “0”
UiSMR4 0 to 7
Set to “0”
UCON
U0IRS, U1IRS
Select the source of UART0/UART1 transmit interrupt
U0RRM, U1RRM Set to “0”
CLKMD0
Invalid because the CLKMD1 bit = 0
CLKMD1
RCSP
Set to “0”
_________
Set this bit to “1” to accept as input the UART0 CTS0 signal from the P6_4 pin
7
i = 0 to 2
Set to “0”
NOTES:
1. The bits used for transmit/receive data are as follows:
• Bit 0 to bit 6 when transfer data is 7-bit long
• Bit 0 to bit 7 when transfer data is 8-bit long
• Bit 0 to bit 8 when transfer data is 9-bit long.
2. Set bit 4 to bit 5 in the U0C1 and U1C1 registers to “0”. The U0IRS, U1IRS, U0RRM and U1RRM bits are included
in the UCON register.
Rev.2.00 Nov 28, 2005 page 168 of 378
REJ09B0124-0200