Keyboard Comparator Control Register (Kbcomp) - Renesas H8S Series Hardware Manual

15.3.10 Keyboard Comparator Control Register (KBCOMP)

KBCOMP controls IrDA operation of SCI_1.
Bit Bit Name Initial Value
7 IrE 0
6 IrCKS2 0
5 IrCKS1 0
4 IrCKS0 0
3 IrTxINV 0
Section 15 Serial Communication Interface (SCI, IrDA)
R/W Description
R/W IrDA Enable
Specifies SCI_1 I/O pins for either normal SCI or
IrDA.
0: TxD1/IrTxD and RxD1/IrRxD pins function as
TxD1 and RxD1 pins, respectively
1: TxD1/IrTxD and RxD1/IrRxD pins function as
IrTxD and IrRxD pins, respectively
R/W IrDA Clock Select 2 to 0
R/W Specifies the high-level width of the clock pulse
during IrTxD output pulse encoding when the IrDA
R/W
function is enabled.
000: B x 3/16 (three sixteenths of the bit rate)
001: φ/2
010: φ/4
011: φ/8
100: φ/16
101: φ/32
110: φ/64
111: φ/128
R/W IrTx Data Invert
Specifies the inversion of the logic level of the output
from IrTxD. When the inversion is specified, IrCKS2
to IrCKS0 specify the low-level width, not the high-
level width.
0: Transmit data is output from IrTxD as it is
1: Transmit data is inverted before being output
from IrTxD
Rev. 3.00 Jul. 14, 2005 Page 453 of 986
REJ09B0098-0300