21. Serial Communication Interface with FIFO (SCIF)
Rev.1.00 Jan. 10, 2008 Page 1066 of 1658
REJ09B0261-0100
21.3.12 Serial Port Register n (SCSPTR) SCSPTR is a 16-bit readable/writable register that controls input/output and data for the port pins multiplexed with the serial communication interface (SCIF) pins at all times. Input data can be read from the RXD pin, and output data written to the TXD pin, and breaks in serial transmission/reception controlled, by means of bits 1 and 0. All SCSPTR bits except bits 6, 4, 2, and 0 are initialized to 0 by a power-on reset or manual reset; the value of bits 6, 4, 2, and 0 is undefined. SCSPTR is not initialized in the module standby state. Note that when reading data via a serial port pin in the SCIF, the peripheral clock value from 2 cycles before is read.
01234567891011121315 14
000000000000
SPB2
DT
SPB2
IO
SCK
DT
SCK
IO
CTS
DT*
CTS
IO*
RTS
DT*
RTS
IO*
⎯⎯
R/WR/WR/WR/WR/WR/WR/WR/WRRRRRRRR
BIt:
Initial value:
R/W:
Bit Bit Name
Initial
Value R/W Description
15 to 8 All 0 R Reserved
These bits are always read as 0. The write value
should always be 0.
7 RTSIO* 0 R/W Serial Port SCIF_RTS Port Input/Output
Specifies the serial port SCIF_RTS pin input/output
condition. When actually setting the SCIF_RTS pin as
a port output pin to output the value set by the RTSDT
bit, the MCE bit in SCFCR should be cleared to 0.
0: RTSDT bit value is not output to SCIF_RTS pin
1: RTSDT bit value is output to SCIF_RTS pin