Samsung S5PC100 User Manual page 1741

ADC AND TOUCH SCREEN INTERFACE
8.4 ADC START DELAY REGISTER (ADCDLY, R/W, ADDRESS = 0XF300_0008)
ADCDLY Bit
FILCLKsrc [16]
DELAY [15:0]
NOTES: 1) In case of ADC conversion mode (Normal, Separate, Auto conversion):
ADC conversion is delayed by counting the value of DELAY bits. Counting clock is PCLK.
→ ADC conversion delay value.
2) In case of waiting for Interrupt mode:
If stylus down occurs in waiting for interrupt mode, Pen Up/Down Interrupt (INT_PNDNUP) occurs after
counting the value of DELAY bits . Counting clock can be system clock or RTC clock by the value of .
FLKCLKsrc bit
→ Interrupt generation delay value.
3) In case of IDLE or STOP mode :
If stylus down occurs in IDLE or STOP mode, Wake-Up signal is generated after counting the value of
DELAY bits. Counting clock can be system clock or RTC clock by the value of FLKCLKsrc bit .
→ Wake-up Interrupt generation delay value.
Before entering STOP mode, set FLKCLKsrc bit to only 1'b1 to use RTC clock
8.5 ADC CONVERSION DATA REGISTER (ADCDAT0, R, ADDRESS = 0XF300_000C)
ADCDAT0
UPDOWN
AUTO_PST
XY_PST
XPDATA
(Normal ADC)
10.7-10
ADCDLY clock source.
0 = system clock.
1 = RTC clock.
ADC delay counter value.
Note: Do not use Zero value(0x0000)
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
0 = Normal ADC conversion.
1 = Sequencing measurement of X-position, Y-position.
[13:12] Manual measurement of X-Position or Y-Position.
00 = No operation mode
01 = X-position measurement
10 = Y-position measurement
11 = Waiting for Interrupt Mode
[11:0] X-Position Conversion data value (Includes Normal ADC
Conversion data value)
Data value : 0x0 ~ 0xFFF
Description
Description
S5PC100 USER'S MANUAL (REV1.0)
Reset Value
Reset Value
0
00ff
-
-
-
-