Datasheet

Section 10 Serial Communication Interface
Rev. 6.00 Aug 04, 2006 page 371 of 680
REJ09B0145-0600
9. Clock Stop Register 1 (CKSTPR1)
S1CKSTP TFCKSTP TCCKSTP TACKSTPS31CKSTP S32CKSTP ADCKSTP TGCKSTP
76543210
1
1111111
R/W
R/W R/W R/W
R/W R/W R/W
R/W
Bit
Initial value
Read/Write
CKSTPR1 is an 8-bit read/write register that performs module standby mode control for peripheral
modules. Only the bits relating to SCI3 are described here. For details of the other bits, see the
sections on the relevant modules.
Bit 6: SCI3-1 module standby mode control (S31CKSTP)
Bit 6 controls setting and clearing of module standby mode for SCI31.
S31CKSTP Description
0 SCI3-1 is set to module standby mode*
1 SCI3-1 module standby mode is cleared (initial value)
Note: * Setting to module standby mode resets all the registers in SCI31.
Bit 5: SCI3-2 module standby mode control (S32CKSTP)
Bit 5 controls setting and clearing of module standby mode for SCI32.
S32CKSTP Description
0 SCI3-2 is set to module standby mode*
1 SCI3-2 module standby mode is cleared (initial value)
Note: * Setting to module standby mode resets all the registers in SCI32.
10. Serial Port Control Register (SPCR)
Bit
Initial value
Read/Write
7
—
1
—
6
—
1
—
5
SPC32
0
R/W
4
SPC31
0
R/W
3
SCINV3
0
R/W
0
SCINV0
0
R/W
2
SCINV2
0
R/W
1
SCINV1
0
R/W
SPCR is an 8-bit readable/writable register that performs RXD
31
, RXD
32
, TXD
31
, and TXD
32
pin
input/output data inversion switching. SPCR is initialized to H'C0 by a reset.