Samsung YP-P10 User Manual Page 445

  • Download
  • Add to my manuals
  • Print
  • Page
    / 596
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 444
ADC AND TOUCH SCREEN INTERFACE S3C2440A RISC MICROPROCESSOR
16-6
ADC TOUCH SCREEN CONTROL REGISTER (ADCTSC)
Register Address R/W Description Reset Value
ADCTSC 0x5800004 R/W ADC Touch Screen Control Register 0x58
ADCTSC Bit Description Initial State
UD_SEN [8] Detect Stylus Up or Down status.
0 = Detect Stylus Down Interrupt Signal.
1 = Detect Stylus Up Interrupt Signal.
0
YM_SEN [7] YM Switch Enable
0 = YM Output Driver Disable.
1 = YM Output Driver Enable.
0
YP_SEN [6] YP Switch Enable
0 = YP Output Driver Enable.
1 = YP Output Driver Disable.
1
XM_SEN [5] XM Switch Enable
0 = XM Output Driver Disable.
1 = XM Output Driver Enable.
0
XP_SEN [4] XP Switch Enable
0 = XP Output Driver Enable.
1 = XP Output Driver Disable.
1
PULL_UP [3] Pull-up Switch Enable
0 = XP Pull-up Enable.
1 = XP Pull-up Disable.
1
AUTO_PST [2] Automatically sequencing conversion of X-Position and Y-Position
0 = Normal ADC conversion.
1 = Auto Sequential measurement of X-position, Y-position.
0
XY_PST [1:0] Manually measurement of X-Position or Y-Position.
00 = No operation mode
01 = X-position measurement
10 = Y-position measurement
11 = Waiting for Interrupt Mode
0
NOTES:
1. While waiting for Touch screen Interrupt, XP_SEN bit should be set to ‘1’(XP Output disable) and PULL_UP bit should
be set to ‘0’(XP Pull-up enable).
2. AUTO_PST bit should be set ‘1’ only in Automatic & Sequential X/Y Position conversion.
3. XP, YP should be disconnected with GND source during sleep mode to avoid leakage current. Because XP, YP will be
maintained as 'H' states in sleep mode. Touch screen pin conditions in X/Y position conversion.
XP XM YP YM ADC ch. select
X Position Vref GND Hi-Z Hi-Z YP
Y Position
Hi-Z Hi-Z Vref GND XP
Page view 444
1 2 ... 440 441 442 443 444 445 446 447 448 449 450 ... 595 596

Comments to this Manuals

No comments