Datasheet

78K0/Ix2 CHAPTER 16 SERIAL INTERFACE CSI11
R01UH0010EJ0500 Rev.5.00 566
Feb 28, 2012
(5) SO11 output (refer to Figure 16-1)
The status of the SO11 output is as follows depending on the setting of CSIE11, TRMD11, DAP11, and DIR11.
Table 16-3. SO11 Output Status
CSIE11 TRMD11 DAP11 DIR11 SO11 Output
Note 1
TRMD11 = 0
Note 2
 
Low level output
Note 2
DAP11 = 0

Low level output
DIR11 = 0 Value of bit 7 of SOTB11
CSIE11 = 0
Note 2
TRMD11 = 1
Note 3
DAP11 = 1
DIR11 = 1 Value of bit 0 of SOTB11
TRMD11 = 0
 
Low level output CSIE11 = 1
TRMD11 = 1
 
Transmission data
Note 4
Notes 1. The actual output of the SO11/P37 pin is determined according to PM37 and P37, as well as the
SO11 output.
2. This is a status after reset.
3. To use the SO11/P37 pin as general-purpose port, set CSIM11 in the default status (00H).
4. After transmission has been completed, the SO11 pin holds the output value of the last bit of
transmission data.
Caution If a value is written to CSIE11, TRMD11, DAP11, and DIR11, the output value of SO11 changes.