EVK-MAYA-W1 - User guide
UBX-21039658 - R01
Board description
Page 13 of 22
3.3.2
VIO configuration
The
VIO
and
VIO_SD
voltages for the MAYA-W1 module can be selected from the 1.8 V or 3.3 V board
supplies with pin header J8. The default configuration is to use 1.8 V for both
VIO
(3-4) and
VIO_SD
(7-8).
Figure 6: VIO configuration (J8)
3.3.3
Current measurement
Pin header J9 allows to measure the current consumption of the MAYA-W1 module individually on
each supply rail. By default, all the board voltages are connected to MAYA-W1, through the jumpers
on J9, to supply the module. To perform a current measurement, remove the jumper and place an
ammeter or current probe between the respective board and module supply pins on J9.
Figure 7: MAYA-W1 current measurement (J9)
3.4
Boot configuration
MAYA-W1 supports the SDIO interface for Wi-Fi and the UART interface for Bluetooth
communication (SDIO-UART mode)
1
. SDIO-UART boot mode is selected by placing a jumper on J13.
☞
The SDIO interface is accessible through either SD card or M.2 card adapters. The UART
interface for Bluetooth can be accessed either directly or via a USB-to-UART bridge. Direct
access is provided on pin header J4 or through the UART signals on the M.2 card interface.
USB access can be provided through the USB type-C connector J1 or the USB lines on the M.2
card interface. For further information see
3.5
Host interfaces
The EVB can be connected to a host system with the included SD card or M.2 card adapters. A USB
connector is provided to access the Bluetooth UART through a USB-to-UART bridge. For information
about the various connection options for each interface, see
1
SDIO-SDIO is supported by hardware, but not productized in software.
