CHAPTER 15 SERIAL INTERFACES CSI10 AND CSI11
User’s Manual U16899EJ2V0UD
330
Figure 15-4. Format of Serial Operation Mode Register 11 (CSIM11)
Address: FF88H After reset: 00H R/W
Note 1
Symbol
<7>
6 5 4 3 2 1 0
CSIM11
CSIE11
TRMD11
SSE11
DIR11
0 0 0
CSOT11
CSIE11
Operation control in 3-wire serial I/O mode
0
Disables
operation
Note 2
and asynchronously resets the internal circuit
Note 3
.
1
Enables
operation
TRMD11
Note 4
Transmit/receive
mode
control
0
Note 5
Receive mode (transmission disabled).
1
Transmit/receive
mode
SSE11
Notes 6, 7
SSI11 pin use selection
0
SSI11 pin is not used
1
SSI11 pin is used
DIR11
Note 8
First
bit
specification
0
MSB
1
LSB
CSOT11
Communication
status
flag
0
Communication is stopped.
1
Communication is in progress.
Notes 1. Bit 0 is a read-only bit.
2. When using P02/SO11, P03/SI11, P04/SCK11, and P05/SSI11/TI001 as general-purpose port pins,
see CHAPTER 4 PORT FUNCTIONS, Caution 3 of Figure 15-6, and Table 15-2.
3. Bit 0 (CSOT11) of CSIM11 and serial I/O shift register 11 (SIO11) are reset.
4. Do not rewrite TRMD11 when CSOT11 = 1 (during serial communication).
5. The SO11 output is fixed to the low level when TRMD11 is 0. Reception is started when data is read
from SIO11.
6. Do not rewrite SSE11 when CSOT11 = 1 (during serial communication).
7. Before setting this bit to 1, fix the SSI11 pin input level to 0 or 1.
8. Do not rewrite DIR11 when CSOT11 = 1 (during serial communication).
Содержание MuPD78F0132H
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