Changhong Electric PT4216, Service Manual, Page: 10 / 62

10
Analog signal input port
L3
AVSYNC ADC vertical synchronization signal input
L4 AHSYNC ADC horizontal synchronization signal input
N2 VGA-SCL VGA lock input
N1 VGA-SDA VGA digital input
D1
、
D2 RED+
、
RED-
Red analog signal input
C3 SOG Green pedestal synchronization signal
C1 、 C2 GREEN+ 、 -
Green analog signal input
B1 、 B2 BLUE+ 、 BLUE-
Blue analog signal input
A2,B3,E3,D3 ADC3.3 ADC3.3Vpower supply
A3
，
A4
ADC1.8 ADC1.8Vpower supply
A5
，
B4
ADC-DGND ADC digital ground
C4
，
D4
，
E1
，
E2
，
E4 ADC-AGND
ADC analog ground
DVI import port
N4
DVI-SCL
DDC interface , serial clock signal
N3
DVI-SDA
DDC interface ， serial data signal
A6 ， B6 RXC+ ， RXC-
DVI clock input signal
A8 ～ A10
B8 ～ B10
RX0+
～ RX2+
RX0- ～ RX2-
DVI input port
B11 REXT External interrupt resistance
C6 ～ C11
DVI-3.3 DVI 3.3V power supply
D6 、 D8 ～ D10
DVI-1.8 DVI 1.8V power supply
A7,A11,B5,B7,C7,D7
D11 DVI-GND DVI ground
Low bandwidth ADC port
C13 LBADC-33
ADC3.3Vpower supply
A12 ， B12 ， C12 LBADC_IN1 ～
LBADC_IN3
ADC analog input channel
D12 LBADC_RETURN Channel analog ground
D13 LBADC-GND Power supply voltage analog ground
OCM bus port
AA1~AA3,Y1~Y3,
W1~W3,V1~V4,
U1~U4,T1~T3
OCMADDR0 ～
OCMADDR19
Address input output port
AB1~AB3,AC1~AC3,
AD1~AD4,AE1~AE3,
AF1~AF3 OCMDATA0~
OCMDATA15 Data input output port
OCM port control signal
R1
，
T4
，
P1
，
P2
ROM_CSn~
ROM_CS2n chip selection signal
R2 OCM_REn Read enable signal
R3 OCM_WEn Write enable signal
L1
L2 OCM_INT2
OCM_INT1 Interrupt
M1 OCM_UDO OCM data output
M2 OCM_UDI OCM data input
D25 OCM_TIMER1 OCM timer input
Standard definition video control port
D16
SVCLK SV pixels clock input
C14 SVHSYNC SV horizon synchronization signal input
B14 SVVSYNC SV vertical synchronization signal input
A14 SVODD Scan status input
A17 SVDV SV data input
Standard definition video data port
D14,D15,A15,A16,
B15,B16,C15,C16
SVDATA7~
SVDATA0 SV ITU656 data input