Rev. 1.0, 09/02, page 409 of 568
Bit
Bit Name
Initial Value
R/W
Description
1
0
CSS1
CSS0
0
0
R/W
R/W
SCS
Pin Selection
Select that the
SCS
pin functions as a port or
SCS
input or output. However, when MSS
=
0, the
SCS
pin functions as an input pin regardless of the
CSS1 and CSS0 settings.
00: I/O port
01: Functions as
SCS
input
10: Functions as
SCS
automatic input/output
(however, functions as
SCS
input before and after
transfer and outputs a low level during transfer)
11: Functions as
SCS
automatic output (however,
outputs a high level before and after transfer and
outputs a low level during transfer)
16.3.2
SS Control Register L (SSCRL)
SSCRL selects software reset and transmit/receive data width.
Bit
Bit Name
Initial Value
R/W
Description
7, 6
All
0
Reserved
The write value should always be 0.
5 SRES
0
R/W Software
Reset
Setting this bit to 1 forcibly resets the SSU internal
sequencer. After that, this bit is automatically
cleared. The ORER, TEND, TDRE, RDRF, and
CE bits in SSSR and the TE and RE bits in SSER
are also initialized. Values of other bits for SSU
registers are held.
To stop transfer, set this bit to 1 to reset the SSU
internal sequencer.
4 to
2
All
0
Reserved
These bits are always read as 0 and cannot be
modified.
1
0
DATS1
DATS0
0
0
R/W
R/W
Transmit/Receive Data Length Selection
Select serial data length from 8, 16, and 32 bits.
00: 8 bits
01: 16 bits
10: 32 bits
11: Setting invalid
Содержание H8S/2627
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