Datasheet

Table Of Contents
Section 17 Serial Communications Interface 3 (SCI3, IrDA)
Rev. 2.00 Jul. 04, 2007 Page 373 of 692
REJ09B0309-0200
Table 17.8 Correspondence between n and Clock
SMR Setting
n Clock CKS1 CKS0
0 φ 0 0
0 φ
W
/2* 0 1
2 φ/16 1 0
3 φ/64 1 1
Note: In subactive or subsleep mode, the SCI3_1, SCI3_2, and SCI3_3 interfaces can operate
only when the CPU clock is φ
W
/2.
17.3.9 Serial Port Control Register (SPCR)
SPCR selects the functions of the TXD32 and TXD31/IrTXD pins, selects whether input data of
the RXD32 pin and RXD31/IrRXD pin is inverted or not, and selects output data of the TXD32
pin and TXD31/IrTXD pin is inverted or not.
Bit Bit Name
Initial
Value
R/W Description
7
6
1
1
Reserved
These bits are always read as 1 and cannot be
modified.
5 SPC32 0 R/W P32/TXD32/SCL (PE5/TXD32) Pin Function Switch
Selects whether pin P32/TXD32/SCL (PE5/TXD32) is
used as P32/SCL (PE5) or as TXD32.
0: P32/SCL (PE5) I/O pin
1: TXD32 output pin
Set the TE bit in SCR3_2 after having set this bit to 1.
4 SPC31 0 R/W P42/TXD31/IrTXD/TMOFH (PF3/TXD31/IrTXD) Pin
Function Switch
Selects whether pin P42/TXD31/IrTXD/TMOFH
(PF3/TXD31/IrTXD) is used as P42/TMOFH (PF3) or
as TXD31/IrTXD.
0: P42 (PF3) I/O pin or TMOFH output pin
1: TXD31/IrTXD output pin
Set the TE bit in SCR3_1 after having set this bit to 1.