Samsung S3C2440A User Manual
Page 420
ADC AND TOUCH SCREEN INTERFACE
S3C2440A RISC MICROPROCESSOR
16-8
ADC CONVERSION DATA REGISTER (ADCDAT0)
Register Address
R/W Description
Reset
Value
ADCDAT0
0x580000C
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
0 = Normal ADC conversion.
1 = Sequencing measurement of X-position, Y-position.
-
XY_PST
[13:12]
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
-
Reserved [11:10]
Reserved
XPDATA
(Normal ADC)
[9:0]
X-Position Conversion data value
(include Normal ADC Conversion data value)
Data value : 0 ~ 3FF
-