Data Sheet

深圳市中龙通电子科技有限公司 Page 11
WiFi Module
CDW-20U5622-00
8. Pin Description
GND
1
WL_BT_ANT
2
GND
3
UART3_RX
4
ESM_CLK
5
CHIP_EN
6
INT
7
ESMCSN
8
VDD
9
NC
10
NC
11
RST_N
12
GPIO1
13
SDIO_DATA_3
15
SDIO_DATA_2
14
SDIO_DATA_CMD
16
SDIO_DATA_CLK
17
SDIO_DATA_1
19
GND
20
NC
21
SDIO_DATA_0
18
VDDIO
22
NC
23
NC
24
PCM_OUT
25
PCM_CLK
26
PCM_IN
27
PCM_SYNC
28
UART3_TX
29
ESMD0
30
GND
31
ESMD1
32
GND
33
NC
34
ESMD2
35
GND
36
ESMD3
37
RFCTL_7
38
RFCTL_6
39
RFCTL_5
40
UART0_RTS_N
41
UART0_TXD
42
UART0_RXD
43
UART0_CTS_N
44
NO. Name Type Description
1
GND
— Ground connections
2
RF
I/O RF I/O port (2.4G and 5G)
3
GND
— Ground connections
4
UART3_RX
— No connect, keep floating
5
ESMCLK
— No connect, keep floating
6
CHIP_EN
I WL/BT Power enable
7
INT
O INT to AP
8
ESMCSN
— No connect, keep floating
9
VDD
P 3.3V INPUT
10
NC
— No connect, keep floating
11
NC
— No connect, keep floating
12
RST_N
I External reset input, active low
13
GPIO1
I/O SD_INT
14
SD_DAT2
I/O SDIO DATA2