EVK-LILY-W1 - User Guide
UBX-15030290 - R04
Board description
Page 9 of 25
3
Board description
This section describes the EVB-LILY-W1 evaluation board and the available connectors and
configuration settings.
3.1
Connectors
Table 6 lists the available connectors on the EVB-LILY-W1 evaluation board and their functions. Refer
to the schematic in section 3.6 for details about the pin assignment.
Function
Description
Name
SDIO interface
SD card connector for connecting to the host SDIO socket
J1
USB interface
Micro-USB 2.0 receptacle for connecting to the USB host
J7
Host interface selection /
SDIO
Pin header for selecting the host interface and accessing the SDIO signals
J2
Power supply configuration
/ LILY-W1 module I/O
Pin header for power supply and I/O voltage selection and access to the I/O signals of
the module
J3
Single external antenna
connector
U.FL coaxial connector for single external 2.4 GHz Wi-Fi antenna (can only be used on
the EVB-LILY-W131)
J6
Diversity external antenna
connector 1
U.FL coaxial connector for first external 2.4 GHz Wi-Fi antenna for antenna diversity
(can only be used on the EVB-LILY-W131); disconnected by default
J4
Diversity external antenna
connector 2
U.FL coaxial connector for second external 2.4 GHz Wi-Fi antenna for antenna
diversity (can only be used on the EVB-LILY-W131); disconnected by default
J5
Table 6: Description of available connectors on the EVB-LILY-W1
3.2
Pin header J2
The dual-row pin header J2 on the evaluation board is used to:
•
Select between the SDIO and USB host interfaces
•
Access the SDIO signals
Table 7 and Table 8 list the available host interface selection options and signals on J2.
Jumper configuration
Description
7-8 bridged, 5-6 open
Selected SDIO host interface (J1)
5-6 bridged, 7-8 open
Selected USB host interface (J7)
Table 7: J2 host interface selection
Pin
Signal
LILY-W1 signal
Description
1
SDCARD.D2
SDIO_D2
SDIO bidirectional data signal 2
3
SDCARD.D3
SDIO_D3
SDIO bidirectional data signal 3
5
SDCARD.CMD
SDIO_CMD/USB_VBUS_ON
SDIO: command/response signal
USB: power valid indication
6
USB_3V3 via 33k
-
VBUS via 33 k and 3.3 V LDO
7
SDIO_EN-N
USB/SDIO-n
Host interface selection
9
SDCARD.VDD
-
SDIO 3.3 V power supply
11
SDCARD.CLK
SDIO_CLK
SDIO host to card clock signal
13
SDCARD.D0
SDIO_D0
SDIO bidirectional data signal 0
15
SDCARD.D1
SDIO_D1
SDIO bidirectional data signal 1
2, 4, 8, 10, 12, 14, 16
GND
GND
Ground
Table 8: J2 pin description
