SH7709S Datasheet, PDF (488/807 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

14.2.8 SC Port Control Register (SCPCR)/SC Port Data Register (SCPDR)
The SC port control register (SCPCR) and SC port data register (SCPDR) control I/O and data for
the port pins multiplexed with the serial communication interface (SCI) pins.
SCPCR settings are used to perform I/O control, to enable data written in SCPDR to be output to
the TxD pin, and input data to be read from the RxD pin, and to control serial
transmission/reception breaks.
It is also possible to read data on the SCK pin, and write output data.
SCPCR
Bit: 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCP7 SCP7 SCP6 SCP6 SCP5 SCP5 SCP4 SCP4 SCP3 SCP3 SCP2 SCP2 SCP1 SCP1 SCP0 SCP0
MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0 MD1 MD0
Initial value: 1 0 1 0 1 0 0 0 1 0 0 0 1 0 0 0
R/W: R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
SCPDR
Bit:
Initial value:
R/W:
7
6
5
4
3
2
1
0
SCP7DT SCP6DT SCP5DT SCP4DT SCP3DT SCP2DT SCP1DT SCP0DT
0
0
0
0
0
0
0
0
R
R/W R/W R/W R/W R/W R/W R/W
SCI pin I/O and data control are performed by bits 3–0 of SCPCR and bits 1 and 0 of SCPDR.
SCPCR Bits 3 and 2—Serial Clock Port I/O (SCP1MD1, SCP1MD0): Specify serial port SCK
pin I/O. When the SCK pin is actually used as a port I/O pin, clear the C/A bit in SCSMR and bits
CKE1 and CKE0 in SCSCR to 0.
Bit 3:
SCP1MD1
0
0
1
1
Bit 2:
SCP1MD0
0
1
0
1
Description
SCP1DT bit value is not output to SCK pin
SCP1DT bit value is output to SCK pin
SCK pin value is read from SCP1DT bit
(Initial values: 1 and 0)
Rev. 5.00, 09/03, page 444 of 760