Samsung S3C2451X User Manual page 648

ADC AND TOUCH SCREEN INTERFACE
ADC CONVERSION DATA (ADCDAT0) REGISTER
Register
ADCDAT0 0x5800000C
ADCDAT0
UPDOWN
AUTO_PST
XY_PST [13:12]
XPDATA_12 [11:10]
(Normal ADC)
XPDATA
(Normal ADC)
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
24-8
Specifications and information herein are subject to change without notice.
Address R/W
R ADC conversion data register
Bit
[15] Up or down state of Stylus at Waiting for Interrupt Mode.
0 = Stylus down state
1 = Stylus up state
[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
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
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
[9:0] X-position conversion data value. (include Normal ADC
conversion data value)
Data value(data [9:0]) = 0 ~ 0x3FF
S3C2451X RISC MICROPROCESSOR
Description
Description
Reset Value
-
Initial State
-
-
-
-
-