Realtek
PWM1E
PWM0E
1
R/W
0
R/W
RTD2120-series
0
0: Pin “P5.1/PWM1“ is P5.1
1: Pin “P5.1/PWM1“ is PWM1
0
0: Pin “P5.0/PWM0“ is P5.0
1: Pin “P5.0/PWM0“ is PWM0
Register::Pin_share1
0xFF01
Name
Bits
Read/Write Reset State Comments
A_DDC_PIN_
7
R/W
SEL
D_DDC_PIN_
6
R/W
SEL
Reserved
5:3
--
PIN_INT1_E
2
R/W
N
CLKO2E
IIC1E
1
R/W
0
R/W
0
0: ADC DDC ports are connected to
ASDA/ASCL
1: ADC DDC ports are connected to
DSDA/DSCL
1
0: DVI DDC ports are connected to
ASDA/ASCL
1: DVI DDC ports are connected to
DSDA/DSCL
0
Reserved
1
Pin “P3.3/INT1” connect to 8051 INT1
enable
0: disable
1: enable
when Pin “P3.3/INT1” is used as GPIO, this
bit must be 0.
0
0: Pin “P7.6/CLKO2“ is P7.6
1: Pin “P7.6/CLKO2“ is CLKO2
1
0: Pin “ASCL/P3.0/Rxd“ is P3.0/RXD, Pin
“ASDA/P3.1/Txd“ is P3.1/TXD
1: Pin “ASCL/P3.0/Rxd“ is ASCL, Pin
“ASDA/P3.1/Txd“ is ASDA
Register::Pin_share2
0xFF02
Name
Bits
Read/Write Reset State Comments
Reserved
CLKO1E
ADC3E
ADC2E
ADC1E
ADC0E
7:5
--
4
R/W
3
R/W
2
R/W
1
R/W
0
R/W
0
Reserved
0
0: Pin “P6.6/CLKO1“ is P6.6
1: Pin “P6.6/CLKO1“ is CLKO1
0
0: Pin “P6.3/ADC3“ is P6.3
1: Pin “P6.3/ADC3“ is ADC3
0
0: Pin “P6.2/ADC2“ is P6.2
1: Pin “P6.2/ADC2“ is ADC2
0
0: Pin “P6.1/ADC1“ is P6.1
1: Pin “P6.1/ADC1“ is ADC1
0
0: Pin “P6.0/ADC0“ is P6.0
1: Pin “P6.0/ADC0“ is ADC0
I/O port
l Each I/O pin of RTD2120 can drive/sink 4mA and the internal pull up/down circuit can
drive/sink 10uA.
confidential
14