Irda Control Register (Ircr) - Renesas H8S/2368 Series Hardware Manual

14.3.10 IrDA Control Register (IrCR)

IrCR selects the function of SCI_0.
Bit Bit Name
7 IrE
6 IrCKS2
5 IrCKS1
4 IrCKS0
3 —
to
0
Initial Value R/W
0 R/W
0 R/W
0 R/W
0 R/W
0 —
Description
IrDA Enable
Specifies normal SCI mode or IrDA mode for
SCI_0 input/output.
0: Pins TxD0/IrTxD and RxD0/IrRxD function as
TxD0 and RxD0
1: Pins TxD0/IrTxD and RxD0/IrRxD function as
IrTxD and IrRxD
IrDA Clock Select 2 to 0
Specifies the high pulse width in IrTxD output
pulse encoding when the IrDA function is enabled.
000: Pulse width = B × 3/16 (3/16 of bit rate)
001: Pulse width = φ/2
010: Pulse width = φ/4
011: Pulse width = φ/8
100: Pulse width = φ/16
101: Pulse width = φ/32
110: Pulse width = φ/64
111: Pulse width = φ/128
Reserved
These bits are always read as 0 and cannot be
modified.
Rev. 2.00, 05/03, page 537 of 820