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VR4102 Datasheet(PDF) 396 Page - NEC

Part # VR4102
Description  64/32-bit Microprocessor
PDF  701 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

VR4102 Datasheet(HTML) 396 Page - NEC

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CHAPTER 19 PIU (TOUCH PANEL INTERFACE UNIT)
396
Table 19-3. PIUASCNREG Bit Manipulation and States
PIUASCNREG bit
manipulation
Scan sequencer’s state
Disable
Standby
WaitPenTouch
PenData Scan
ADDSTART
0
o 1
u
ADPortScan
Note
uu
1
o 0
u
Disable
uu
TPPSCAN
0
o 1
ðð
ð
ð
1
o 0
ðð
ð
ð
PIUCNTREG bit manipulation
Scan sequencer’s state
IntervalNextScan
ADPortScan
CmdScan
ADDSTART
0
o 1
u
ADPortScan
Note
u
1
o 0
u
Disable
u
TPPSCAN
0
o 1
u
WaitPenTouch
?
1
o 0
?
?
Standby
Note
After ADPortScan is completed, the bit is automatically cleared to 0.
Remarks
ð : The bit change is retained but there is no state transition.
u : Setting prohibited (operation not guaranteed)
? : Combination of state and bit status before setting does not exist



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