21. Serial Communication Interface with FIFO (SCIF)
Rev.1.00 Jan. 10, 2008 Page 1048 of 1658
REJ09B0261-0100
21.3.5 Serial Mode Register (SCSMR) SCSMR is a 16-bit register used to set the SCIF's serial communication format and select the baud rate generator clock source. SCSMR can always be read from and written to by the CPU.
01234567891011121315 14
0000000000000000
CKS0CKS1STOPO/EPECHRC/A⎯⎯
R/WR/WRR/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 C/A 0 R/W Communication Mode
Selects asynchronous mode or clocked synchronous
mode as the SCIF operating mode.
0: Asynchronous mode
1: Clocked synchronous mode
6 CHR 0 R/W Character Length
Selects 7 or 8 bits as the asynchronous mode data
length. In clocked synchronous mode, the data length is
fixed at 8 bits regardless of the CHR bit setting. When
7-bit data is selected, the MSB (bit 7) of SCFTDR is not
transmitted.
0: 8-bit data
1: 7-bit data