Samsung S3C6400X User Manual page 1132

S3C6400 RISC MICROPROCESSOR
ADC AND TOUCH SCREEN INTERFACE SPECIAL REGISTERS
ADC CONTROL REGISTER (ADCCON)
Register Address
ADCCON 0x7E00B000
ADCCON
ECFLG [15]
PRSCEN [14]
PRSCVL [13:6]
SEL_MUX [5:3]
STDBM
READ_ START
ENABLE_START
R/W
R/W
Bit
End of conversion flag(Read only)
0 = A/D conversion in process
1 = End of A/D conversion
A/D converter prescaler enable
0 = Disable
1 = Enable
A/D converter prescaler value
Data value: 5 ~ 255
(This A/D converter is designed to operate at maximum 2.5MHz
clock)
Analog input channel select
000 = AIN 0
001 = AIN 1
010 = AIN 2
011 = AIN 3
100 = YM
101 = YP
110 = XM
111 = XP
[2] Standby mode select
0 = Normal operation mode
1 = Standby mode
[1] A/D conversion start by read
0 = Disable start by read operation
1 = Enable start by read operation
[0] A/D conversion starts by enable.
If READ_START is enabled, this value is not valid.
0 = No operation
1 = A/D conversion starts and this bit is cleared after the start-up.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.
ADC AND TOUCH SCREEN INTERFACE
Description
ADC Control Register
Description
Reset Value
0x3FC4
Initial State
0
0
0xFF
0
1
0
0
39-5