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D4
DiVMDx: serial i/F Ch.x Clock Division Ratio select Bit
Selects the division ratio of the sampling clock. (Default: indeterminate)
1 (R/W): 1/8
0 (R/W): 1/16
Select the division ratio necessary to generate the sampling clock for asynchronous or ISO7816 transfer.
When DIVMDx is set to 1, the sampling clock is generated from the input clock of the serial interface
(output from the baud-rate timer or input from #SCLKx) by dividing it by 8. When DIVMDx is set to 0,
the input clock is divided by 16.
D3
iRtLx: serial i/F Ch.x irDa i/F output Logic inversion Bit
Inverts the logic of the IrDA output signal. (Default: indeterminate)
1 (R/W): Inverted
0 (R/W): Not inverted
When using the IrDA interface, set the logic of the SOUTx output signal to suit the infrared-ray com-
munication circuit that is connected external to the chip. If IRTLx is set to 1, a high pulse is output
when the output data = 0 (held low-level when the output data = 1). If IRTLx is set to 0, a low pulse is
output when the output data = 0 (held high-level when the output data = 1).
D2
iRRLx: serial i/F Ch.x irDa i/F input Logic inversion Bit
Inverts the logic of the IrDA input signal. (Default: indeterminate)
1 (R/W): Inverted
0 (R/W): Not inverted
When using the IrDA interface, set the logic of the signal that is input from an external infrared-ray
communication circuit to the chip to suit the serial interface. If IRRLx is set to 1, a high pulse is input
as a logic 0. If IRRLx is set to 0, a low pulse is input as a logic 0.
D[1:0]
iRMDx[1:0]: serial i/F Ch.x interface Mode select Bits
Selects the IrDA interface function.
Table V.1.8.5 IrDA Interface Setting
iRMDx1
1
0
iRMDx0
1
0
1
0
interface mode
Do not set. (reserved)
IrDA 1.0 interface
Do not set. (reserved)
Normal interface
(Default: indeterminate)
When using the IrDA interface function, write 0b10 to IRMDx[1:0] while setting to asynchronous mode
for the transfer mode. If the IrDA interface function is not to be used, write 0b00 to IRMDx[1:0].
note: This selection must always be performed before the transfer mode and other conditions are
set.