Samsung S3C2440A - 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 -