Samsung S5PC110 Manual page 1924

S5PC110_UM
7.3 TOUCH SCREEN INTERFACE OPERATION
7.3.1 BLOCK DIAGRAM ADC & TOUCH SCREEN INTERFACE
is the functional block diagram of A/D converter and Touch Screen Interface.
Figure 7-1
AIN5(XP0), AIN9(XP1)
AIN4(XM0), AIN8(XM1)
AIN3(YP0), AIN7(YP1)
AIN2(YM0), AIN6(YM1)
AIN1, AIN0
Figure 7-1
NOTE: When Touch Screen device is not used, XM, XP, YM or YP can be connected to Analog Input Signal for Normal ADC
conversion.
VDDA_ADC
VDDA_ADC
VDDA_ADC
ADC and Touch Screen Interface Functional Block Diagram
PULL_UP0, 1
XM_SEN0, 1
Touch screen
YM_SEN0, 1
pads control
XP_SEN0, 1
YP_SEN0, 1
10:1 A/D
MUX Converter
ADC input
control
Waiting for interrupt
7 ADC & TOUCH SCREEN INTERFACE
ADC
interface
&
Touch
screen
control
Interrupt
generation
INT_ADC0
INT_PEN0
INT_ADC1
INT_PEN1
7-3