HD64F2145 Datasheet, PDF (396/829 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

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
IrCKS2 0
5
IrCKS1 0
4
IrCKS0 0
R/W IrDA Clock Select 2 to 0
R/W _{These bits specify the high-level width of the clock}
R/W _{pulse during IrTxD output pulse encoding when the}
IrDA function is enabled.
000: B × 3/16 (B: Bit rate)
001: ø/2
010: ø /4
011: ø /8
100: ø /16
101: ø /32
110: ø /64
111: ø /128
3
KBADE 0
2
KBCH2 0
1
KBCH1 0
0
KBCH0 0
R/W Bits related to the A/D converter
R/W _{For details, refer to section 21.3.4, Keyboard}
R/W _{Comparator Control Register (KBCOMP).}
R/W
Rev. 2.0, 08/02, page 356 of 788