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PIUCNTREG bit manipulation
Note1
0 → 1
PADRST
0 → 1
PIUPWR
1 → 0
0 → 1
PIUSEQEN
1 → 0
0 → 1
PADATSTART
1 → 0
0 → 1
PADATSTOP
1 → 0
0 → 1
PADSCANSTART
1 → 0
0 → 1
PADSCANSTOP
1 → 0
PIUCNTREG bit manipulation
Note1
0 → 1
PADRST
0 → 1
PIUPWR
1 → 0
0 → 1
PIUSEQEN
1 → 0
0 → 1
PADATSTART
1 → 0
0 → 1
PADATSTOP
1 → 0
0 → 1
PADSCANSTART
1 → 0
0 → 1
PADSCANSTOP
1 → 0
Notes 1.
After 1 is written, the bit is automatically cleared to 0 four TClock cycles later.
2.
State transition occurs during touch status.
3.
State transition occurs when the PIUSEQEN bit is set to 1.
4.
State transition occurs after one set of data is sampled. The PADSCANSTOP bit is cleared to 0 after the
state transition occurs.
− : The bit change is retained but there is no state transition.
Remark
× : Setting prohibited (operation not guaranteed)
? : Combination of state and bit status before setting does not exist.
CHAPTER 14 TOUCH PANEL INTERFACE UNIT (PIU)
Table 14-3. PIUCNTREG Bit Manipulation and States
Disable
−
Standby
?
×
WaitPenTouch
?
×
×
×
×
×
DataScan
×
×
×
Scan sequencer's state
Interval
Disable
?
×
?
Standby
×
×
×
×
×
×
Note4
Standby
Standby
?
User's Manual U14272EJ3V0UM
Scan sequencer's state
Standby
WaitPenTouch
Disable
Disable
×
?
×
Disable
?
?
Standby
−
DataScan
−
−
−
×
−
×
Note3
×
−
×
−
×
−
×
ADPScan
CMDScan
Disable
Disable
?
?
×
×
?
?
Standby
Standby
×
×
×
×
×
×
×
×
×
×
×
×
Note4
Standby
−
−
DataScan
Disable
×
×
?
Standby
Note2
×
×
×
×
×
×
Note4
Standby
−
Note4
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