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Preliminary
ADC AND TOUCH SCREEN INTERFACE
S3C2451X RISC MICROPROCESSOR
24-8
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
ADC CONVERSION DATA (ADCDAT0) REGISTER
Register Address
R/W
Description
Reset
Value
ADCDAT0 0x5800000C
R
ADC
conversion data register
-
ADCDAT0 Bit
Description
Initial
State
UPDOWN
[15]
Up or down state of Stylus at Waiting for Interrupt Mode.
0 = Stylus down state
1 = Stylus up state
-
AUTO_PST
[14]
Automatic sequencing conversion of X-position and
Y-position. (mirroring AUTO_PST in ADCTSC register)
0 = Normal ADC conversion
1 = Auto measurement of X-position, Y-position
-
XY_PST
[13:12]
Manual measurement of X-position or Y-position. (mirroring
XY_PST in ADCTSC register)
00 = No operation mode
01 = X-position measurement
10 = Y-position measurement
11 = Waiting for Interrupt Mode
-
XPDATA_12
(Normal ADC)
[11:10]
When A/D resolution is 12bit, X-position conversion MSB 2-bit
data value (include Normal ADC conversion data)
Data value(data [11:0]) = 0 ~ 0xFFF
-
XPDATA
(Normal ADC)
[9:0]
X-position conversion data value. (include Normal ADC
conversion data value)
Data value(data [9:0]) = 0 ~ 0x3FF
-