Renesas H8/3847R Series Hardware Manual page 410

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