HIKVISION DS7208HVI-ST/SE

Schedule: 1 Crystal Effect
Schedule:2 Voltage Effect
Serial
number
Crystals Action (devices work clock)
1
27M（Y4）
TW2866 chips work clock (82 feet input 27 M)
2
25M（Y3）
RTL8201 chips work clock
3
24M（Y1）
KY2010 system startup
clock, and integrated USB
module clock
The serial
number
Power chip function (devices working voltage)
1
BD9328（U1
）
2 feet enter 12 V, 3 feet output 5 V, mainly used for
other components provide normal work voltage
BD9328（U5
）
2 feet enter 12 V, foot 1 output 1.0 V, mainly for the
KY2010 system start working voltage
BD9328（U3
）
2 feet enter 12 V, 3 feet 3.3 V, mainly used for other
components provide normal working voltage, power
of MP8904 turn 1.2 V output
BD9328（U4
）
2 feet enter 12 V, foot 1 output 1.8 V, mainly for the
KY2010 system working voltage and DDR2 memory
work voltage
2
BD9329（U2
）
2 feet enter 12 V, 3 feet output 5 V, mainly for the
SATA hard disk normal power
3 MP8904
（UV3）
feet 8 input 3.3 V, foot 1 output 1.2 V, mainly for the
TW2866 chip normal working voltage