Renesas H8/38024 Hardware Manual page 373

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—Reserved
Bit 4 is reserved; only 0 can be written to this bit.
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
Bit 2—RXD Pin Input Data Inversion Switch
32
Bit 2 specifies whether or not RXD
Bit 2
SCINV2 Description
0 RXD
32
1 RXD
32
Bits 1 and 0—Reserved
Bits 1 and 0 are reserved; only 0 can written to these bits.
/TXD is used as P4
2 32
I/O pin
2
output pin *
32
pin output data is to be inverted.
32
pin input data is to be inverted.
32
input data is not inverted
input data is inverted
or as TXD .
2 32
Rev. 6.00, 08/04, page 343 of 628
(initial value)
(initial value)
(initial value)