Datasheet

Section 15 Serial Communication Interface (SCI and IrDA)
Rev. 3.00 Mar 21, 2006 page 375 of 788
REJ09B0300-0300
15.3.10 Keyboard Comparator Control Register (KBCOMP)
KBCOMP selects the functions of the SCI and A/D converter.
Bit Bit Name Initial Value R/W Description
7 IrE 0 R/W IrDA Enable
Specifies SCI_2 I/O pins for either normal SCI or IrDA.
0: TxD2/IrTxD and RxD2/IrRxD pins function as TxD2
and RxD2 pins, respectively
1: TxD2/IrTxD and RxD2/IrRxD pins function as IrTxD
and IrRxD pins, respectively
6
5
4
IrCKS2
IrCKS1
IrCKS0
0
0
0
R/W
R/W
R/W
IrDA Clock Select 2 to 0
These bits specify the high-level width of the clock
pulse during IrTxD output pulse encoding when the
IrDA function is enabled.
000: B × 3/16 (B: Bit rate)
001: φ/2
010: φ/4
011: φ/8
100: φ/16
101: φ/32
110: φ/64
111: φ/128
3
2
1
0
KBADE
KBCH2
KBCH1
KBCH0
0
0
0
0
R/W
R/W
R/W
R/W
Bits related to the A/D converter
For details, refer to section 21.3.4, Keyboard
Comparator Control Register (KBCOMP).