Data Sheet

深圳市中龙通电子科技有限公司 Page 12
WiFi Module
CDW-20U5622-00
15
SD_DAT3
I/O SDIO DATA3
16
SD_CMD
I/O SDIO command line
17
SD_CLK
I/O SDIO CLK
18
SD_DAT0
I/O SDIO DATA0
19
SD_DAT1
I/O SDIO DATA1
20
GND
— Ground connections
21
NC
— No connect, keep floating
22
VDDIO
P I/O Voltage supply input 1.8V(only)
23
NC
— No connect, keep floating
24
NC
— No connect, keep floating
25
PCM_OUT
O PCM data output
26
PCM_CLK
I/O PCM CLK
27
PCM_IN
I PCM data input
28
PCM_SYNC
I PCM sync signal
29
UART3_TX
— No connect, keep floating
30
ESMD0
— No connect, keep floating
31
GND
— Ground connections
32
ESMD1
— No connect, keep floating
33
GND
— Ground connections
34
NC
— No connect, keep floating
35
ESMD2
— No connect, keep floating
36
GND
— Ground connections
37
ESMD3
— No connect, keep floating
38
RFCTL_7
— No connect, keep floating
39
RFCTL_6
— No connect, keep floating
40
RFCTL_5
— No connect, keep floating
41
UART0_RTS_N
I Bluetooth UART interface(reserved)
42
UART0_TXD
O Bluetooth UART interface(reserved)
43
UART0_RXD
I Bluetooth UART interface(reserved)
44
UART0_CTS_N
I Bluetooth UART interface(reserved)
Note:
Strapping PIN:PIN38~PIN40(RFCTL7,6,5) default High (111), do not change.