HIKVISION DS7208HVI-SN, Руководство по эксплуатации/техническому обслуживанию

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5.7. Clock Module

Clock control chip: 8563 T

32768 HZ: 8563 T reset the clock

Battery: External Battery, normal voltage 3.3 V

Diodes (DG1, DG2, DG3) : DG1 connects to 3.3 V voltage, DG2, DG3
Battery are connected at one end, when the mainboard electricity, DG2,
DG3 globe, DG1 conduction, Battery don't power supply; When the
mainboard power cuts, in turn, the Battery power supply, DG2, DG3
conduction, DG1 deadline

The clock module component
8563T
UL4
1
2
3
4
8
7
6
5
DG1
BATTERY
3.3V
DG2 DG3
3.3V
X1
32768Hz
5.8. Voice Talkback Module

Voice talkback module main control chip: TW2866 (US1), PIN 2 through 3.9
K resistance (RS60) + 390Ωresistance (RP24) output Aout

Voice talkback module part:
8563T
32768HZ
Battery
Diode