PRELIMINARY
S3C6400 RISC MICROPROCESSOR
ADC AND TOUCH SCREEN INTERFACE
39-5
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 SPECIAL REGISTERS
ADC CONTROL REGISTER (ADCCON)
Register
Address
R/W
Description
Reset Value
ADCCON 0x7E00B000 R/W
ADC
Control Register
0x3FC4
ADCCON
Bit
Description
Initial State
ECFLG
[15]
End of conversion flag(Read only)
0 = A/D conversion in process
1 = End of A/D conversion
0
PRSCEN
[14]
A/D converter prescaler enable
0 = Disable
1 = Enable
0
PRSCVL [13:6]
A/D converter prescaler value
Data value: 5 ~ 255
(This A/D converter is designed to operate at maximum 2.5MHz
clock)
0xFF
SEL_MUX
[5:3]
Analog input channel select
000 = AIN 0
001 = AIN 1
010 = AIN 2
011 = AIN 3
100 = YM
101 = YP
110 = XM
111 = XP
0
STDBM
[2]
Standby mode select
0 = Normal operation mode
1 = Standby mode
1
READ_ START
[1]
A/D conversion start by read
0 = Disable start by read operation
1 = Enable start by read operation
0
ENABLE_START
[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.
0