4. DS80054 Mainboard Hardware Modules Diagram
Diagram 1.2
DS80054 Mainboard Hardware Modules Diagram
5. DS80054 Mainboard Hardware Module Introduction
5.1. Audio Video A/D Module
Video A/D Module Main Control Chip
:
TW2866 Audio
1)
TW2866
(
US1
)
PIN 6 control first audio input
(
input matching resistance
100 (RU9) and capacitance (CS18)
)
2)
TW2866
(
US1
)
PIN 13/17/21/25 control 1-4 road vedio input
(
BNC input
matching 4 HK-5 production tube
(
TVS2/4/6/8
);
4 75Ωresistance
(
RV2/4/6/8
);
4 100Ωresistance
(
RU1/2/3/4
);
4 capacitance
(
CS12/8/13/11
)
)
3)
TW2866
(
US2
)
PIN 13/17/21/25 control 5-8 road vedio input
(
BNC input
matching 4 HK-5 production tube
(
TVS1/3/5/7
);
4 75Ωresistance
VGAmodule
RS485module
USB interface
Network module
VOUT module
SATA
power
module
A/D module
Power module
SATA interface
Clock module
RS232 interface
Network module
Front-panel interface