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Table 13.1.1. 2. Registers to Be Used and Settings in Clock Synchronous Serial I/O Mode
Register
Bit
(3)
UiTB
0 to 7
(3)
UiRB
0 to 7
OER
UiBRG
0 to 7
(3)
UiMR
SMD2 to SMD0
CKDIR
IOPOL(i=2)
UiC0
CLK1 to CLK0
CRS
TXEPT
CRD
NCH
CKPOL
UFORM
UiC1
TE
TI
RE
RI
U2IRS
U2RRM
U2LCH
U2ERE
U2SMR
0 to 7
U2SMR2
0 to 7
U2SMR3
0 to 2
NODC
4 to 7
U2SMR4
0 to 7
UCON
U0IRS, U1IRS
U0RRM, U1RRM
CLKMD0
CLKMD1
RCSP
7
NOTES:
1. Set bit 4 and bit 5 in the U0C1 and U1C1 register are set to "0". The U0IRS, U1IRS, U0RRM and U1RRM
bits are in the UCON register.
2. Not all register bits are described above. Set those bits to "0" when writing to the registers in clock synchro-
nous serial I/O mode.
3. Set the bit 6 and bit 7 in the U0C1 and U1C1 register to "0".
4. Set the bit 7 in the U0MR and U1MR register to "0".
i=0 to 2
R
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2
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0
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b
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, 5
2
0
0
7
R
E
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0
9
B
0
2
0
2
0 -
2
0
0
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Set transmission data
Reception data can be read
Overrun error flag
Set a transfer rate
Set to "001
2
Select the internal clock or external clock
(4)
Set to "0"
Select the count source for the UiBRG register
_______
Select CTS or RTS to use
Transmit register empty flag
Enable or disable the CTS or RTS function
Select TxDi pin output mode
Select the transfer clock polarity
Select the LSB first or MSB first
Set this bit to "1" to enable transmission/reception
Transmit buffer empty flag
Set this bit to "1" to enable reception
Reception complete flag
(1)
Select the source of UART2 transmit interrupt
(1)
Set this bit to "1" to use UART2 continuous receive mode
(3)
Set this bit to "1" to use UART2 inverted data logic
(3)
Set to "0"
Set to "0"
Set to "0"
Set to "0"
Select clock output mode
Set to "0"
Set to "0"
Select the source of UART0/UART1 transmit interrupt
Set this bit to "1" to use continuous receive mode
Select the transfer clock output pin when CLKMD1 = 1
Set this bit to "1" to output UART1 transfer clock from two pins
Set this bit to "1" to accept as input the UART0 CTS
Set to "0"
page 143
f o
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Function
"
_______
_______
_______
_________
signal from the P6
pin or P7
0
4
13. Serial I/O
pin
0
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