EVK-LILY-W1 - User Guide
UBX-15030290 - R04
Getting started
Page 8 of 25
2.1
Host interface through SDIO
The default jumper settings, as shown in Figure 4 and described in Table 4, enable SDIO as the host
interface. Secure Digital (SD) card is used for power supply of the main and I/O voltages.
Jumper configuration
Description
J2: 7-8 bridged
SDIO interface selection
J3: 5-6 bridged
Selects 3.3 V SD card supply for main power supply
J3: 3-4 bridged
Selects 3.3 V I/O voltage
Table 4: Jumper configuration for SDIO interface
Connect the evaluation board to an SDIO capable host by inserting the board into the SD card slot. As
the LILY-W1 series module uses an SDIO host interface, only an SDIO capable card reader (not just a
common SD card reader) will be able to transfer the data and interrupts correctly. You can use either
a built in reader (usually found in laptops – but not all models support SDIO), or a separate reader in
one of the extension slots.
An example card reader for Linux is the “Sonnet SDXC UHS-I Pro Reader/Writer ExpressCard/34”
[4].
⚠
Be careful while inserting the evaluation board into the SDIO slot of a laptop. Such built-in readers
might be designed poorly and can be damaged easily compared to the ones found on development
platforms, which are more compact.
2.2
Host interface through USB
The jumper settings for selecting the USB interface for host communication are shown in Figure 5
and described in Table 5. Use a USB micro-B cable to connect the evaluation board to the host through
the micro-USB receptacle on the evaluation board.
Jumper configuration
Description
J2: 5-6 bridged
USB interface selection. SD_CMD/USB_VBUS_ON connected to VBUS (via 33k and
3.3V LDO)
J3: 7-8 bridged
Selects USB supply for main power supply
J3: 3-4 bridged
Selects 3.3 V I/O voltage
Table 5: Jumper configuration for USB interface
