Datasheet

Section 10 Serial Communication Interface
Rev. 6.00 Aug 04, 2006 page 372 of 680
REJ09B0145-0600
Bits 7 to 6: Reserved bits
Bits 7 to 6 are reserved; they are always read as 1 and cannot be modified.
Bit 5: P4
2
/TXD
32
pin function switch (SPC32)
This bit selects whether pin P4
2
/TXD
32
is used as P4
2
or as TXD
32
.
Bit 5
SPC32 Description
0 Functions as P4
2
I/O pin (initial value)
1 Functions as TXD
32
output pin*
Note: * Set the TE bit in SCR3 after setting this bit to 1.
Bit 4: P3
5
/TXD
31
pin function switch (SPC31)
This bit selects whether pin P3
5
/TXD
31
is used as P3
5
or as TXD
31
.
Bit 4
SPC31 Description
0 Functions as P3
5
I/O pin (initial value)
1 Functions as TXD
31
output pin*
Note: * Set the TE bit in SCR3 after setting this bit to 1.
Bit 3: TXD
32
pin output data inversion switch
Bit 3 specifies whether or not TXD
32
pin output data is to be inverted.
Bit 3
SCINV3 Description
0TXD
32
output data is not inverted (initial value)
1TXD
32
output data is inverted