资料介绍
展讯CPU图解6
5
4
3
2 LTR
1 REVISION RECORD ECO NO: APPROVED: DATE:
D
D
ANT
2
GND1
27pF
ANT102 1 RF-IN ANT RF-SWITCH
100PF
L101
L136
NF
3
NF
VRF GND GND
100PF C125 4.7uF C126
C102
GND2
4
GND
C101
ANT101
GND
Matching circuit
VRF
VBAT
C
VRF
0.1uF C92
C
2
4
2 100PF C64
GND
26-CRYSTAL GND GND
U18
R55
NF
XTLEN
R46 1K R63 1K
1
HOT
HOT
1 2 1.2PF 27nH
2
GND
3 2 1 1 56pF 13 15 17 19 21 C62 2
R5 10K
1
3
L55
RFSCK0 RFSEN0
R3 10K
GND
4 5 6
1
R4
VRF
2
C77
RF-FILTER-EGSM
OUTPUT1 GND OUTPUT2
GND INPUT GND
GND GND
1
C91 1 2 1.2PF U6
GND
9
U13
32
31
30
29
28
27
26
25
1K RES-N-1KX4-0402 RN1
1 2 3 4 5 6 7 8
XMODE
XTAL1
XTAL2
XDIV
VDD
VDD
XEN
AFC
RFSDA0
R64
GND
33
GND
U17 24 23 22 21 20 L10 19 18 17 2 8.2nH
SCLK #SEN SDIO BQN BQP B
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