Quectel EC25 series, Справочный проект

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TITLE
PROJECT
Yeoman CHEN
CHECKED BY
Eden LIU
DRAWN BY
EC25 Reference Design
OF
A
6
5
4
3 2
1
SHEET
A
B
C
D
1 2 3 4 5 6
D
C
B
Quectel Wireless Solutions
SIZE
VER
10 9
C
DATE 2016/11/11
A2
1. Keep all RESERVED and unused pins unconnected.
Notes:
Reserved for debugging
2. BT function of FC20 is under development.
FC20 Series Design
R806 must be mounted.
3. SDIO_DATA2 is a signal that affects the boot of the module, and should be kept at high level when the power supply resets.
4. The impedance of the SDIO data signal line must be controlled as 50Ω when routing.
5. SDIO data lines should be wrapped together by GND lines; SDIO_CMD and SDIO_CLK network lines should be wrapped with GND lines separately.
6. Please keep the pin 5~8, 10, and 13~18 open in FC20-N.
R904
10K
C909
100nF
C908
33pF
C907
10pF
+
C910
100uF
R902
0R
R901
10K
R912
NM_10K
C902
NM_0.1uF
C903
10uF
C904
100nF
C905
33pF
C906
10pF
R919
0R
C912
NM
R918
10K
R913
NM_10K
C911
NM_0.1uF
R903
10K
1 GND
2 RESERVED
3 RESERVED
4 DBG_TXD
5 LTE_UART_TXD
6 LTE_UART_RXD
7 BT_UART_RTS
8 BT_UART_CTS
9 WLAN_EN
10 BT_EN
11 VIO
12 GND
20
GND
21
VDD_3V3
22
SDIO_D3
23
SDIO_D2
24
SDIO_D1
25
SDIO_D0
26
SDIO_CLK
27
SDIO_CMD
28
GND
29
GND
30
RF_ANT
31
GND
13
PCM_IN
14
PCM_SYNC
15
PCM_CLK
16
PCM_OUT
17
BT_UART_TXD
18
BT_UART_RXD
19
32KHZ_IN
32
WAKE_ON_WIRELESS
33
RESERVED
34
RESERVED
35
RESERVED
36
GND
37
RESERVED
38
GND
U901-A
FC20
39 GND
40 GND
41 RESERVED
42 RESERVED
43
GND
44
GND
45
GND
46
RESERVED
47
RESERVED
48
GND
49
GND
50
GND
51
GND
52
GND
U901-B
FC20
R917 0R
R916
0R
R914 0R
R911 0R
R910 0R
R915 0R
R905
NM_10K
R906
10K
R907
NM_10K
R908
NM_10K
R909
NM_10K
C901
NM_10nF
[6]
FC20_ANT
[1]
SDIO_CMD
[1]
SDIO_CLK
[1]
SDIO_D0
[1]
SDIO_D1
[1]
SDIO_D2
[1]
SDIO_D3
[3]
VDD3V3_FC20
[1,2,4,7,9,10]
VDD_EXT
[1,2,4,7,9,10]
VDD_EXT
[1]
WAKE_ON_WIRELESS
[10] DBG_TXD_FC20
[1,2,4,7,9,10]
VDD_EXT
[1] WLAN_EN
[1,2,4,7,9,10] VDD_EXT
[1]
WLAN_SLP_CLK
[1] PCM_IN_BT
[1] PCM_SYNC_BT
[1] PCM_CLK_BT
[1] PCM_OUT_BT
[1]
TXD_BT
[1]
RXD_BT
[1,2,4,7,9,10] VDD_EXT
[1]
BT_EN
[1] CTS_BT
[1] RTS_BT
[1] COEX_UART_RX
[1] COEX_UART_TX
[1,2,4,7,9,10]
VDD_EXT
[1,2,4,7,9,10]
VDD_EXT
[1,2,4,7,9,10]
VDD_EXT
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