SH7708 Datasheet, PDF (448/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

Bit 1—Serial Port Break I/O (SPB0IO): Specifies the serial port TxD pin output condition. When
the TxD pin is actually set as a port output pin and outputs the value set by the SPB0DT bit, the
TE bit in SCSCR should be cleared to 0.
Bit 1: SPB0IO
0
1
Description
The SPB0DT bit value is not output to the TxD pin.
The SPB0DT bit value is output to the TxD pin.
(Initial value)
Bit 0–Serial Port Break Data (SPB0DT): Specifies serial port RxD pin input data and TxD pin
output data. The TxD pin output condition is set with the SPB0IO bit (see the description of
SPB0IO above). When the TxD pin is set as an output, the value of the SPB0DT bit is output to
the TxD pin. The RxD pin value is always read from the SPB0DT bit, regardless of the value of
the SPB0IO bit. The initial value of this bit after a power-on reset is undefined.
Bit 0 : SPB0DT
0
1
Description
I/O data level is low.
I/O data level is high.
(Initial value)
430