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CHAPTER 15 SERIAL INTERFACE CSI10
User’s Manual U19780EJ2V0UD
422
(5) SO10 output (see Figure 15-1)
The status of the SO10 output is as follows by setting CSIE10, TRMD10, DAP10, and DIR10.
Table 15-3. SO10 Output Status
CSIE10 TRMD10 DAP10 DIR10
SO10 Output
Note 1
TRMD10 = 0
Notes 2, 3
−
−
Outputs low level
Note 2
DAP10 = 0
−
Outputs low leve
DIR 10 = 0
Value of bit 7 of SOTB10
CSIE10 = 0
Note 2
TRMD10 = 1
DAP10 = 1
DIR 10 = 1
Value of bit 0 of SOTB10
TRMD10 = 0
Note 3
−
−
Outputs low leve
CSIE10 = 1
TRMD10 = 1
−
−
Transmit data
Note 4
Notes 1.
The actual output of the SO10/INTP1/P35 pin is determined according to PM35 and P35, as well as the
SO10 output.
2.
Status after reset.
3.
To use P35/SO10/INTP1 as general-purpose port, set the serial clock selection register 10 (CSIC10) in
the default status (00H).
4.
After transmission has been completed, the SO1n pin holds the output value of the last bit of
transmission data.
Caution If a value is written to CSIE10, TRMD10, DAP10, and DIR10, the output value of SO10 changes.