Newland NLS-EM20, Руководство по интеграции, Страница: 25 / 27

19
Wake-Up Circuit
The circuit below is used to wake the engine from sleep mode. The right part shows internal driver circuit
on the decoder board and the left part shows external circuit that users may utilize in actual application.
The nWAKE signal is from Pin 11 of the 12-pin FPC connector.
Users can adjust the external circuit and its function as per actual needs, on condition that the external
circuit matches the internal circuit.
R69
10K
R73 1.5K
VDD
2N3906
Q3
R74 0
WKUP_TRIG
R75 0
nWAKE
NRST
C33
33pF
主 板 内 部 接 收 电 路 用 户 参 考 电 路
B3F-4000
S2
2 3
1 4
C5
100pF
CBW1608/60R
L2
C6
100pF
nWAKE
Fig. 4-7
Trigger Circuit
The circuit below is used to provide the engine with an active low signal to activate a scan and decode
session. The right part shows internal driver circuit on the decoder board and the left part shows external
circuit that users may utilize in actual application. The nTrig signal is from Pin 12 of the 12-pin FPC
connector.
Users can adjust the external circuit and its function as per actual needs, on condition that the external
circuit matches the internal circuit.
R34
10K
R33 1.5K
VDD
2N3906
Q2
nWAKE_MCU
R77 0
nTrig nTrig
C28
33pF C29
100nF
C30
1nF B3F-4000
S3
2 3
1 4
主 板 内 部 接 收 电 路 用 户 参 考 电 路
C3
100pF
CBW1608/60R
L1
C4
100pF
Fig. 4-8
External Circuit Internal Driver Circuit
External Circuit
Internal Driver Circuit