Ublox EVK-MAYA-W1 User manual

UBX-21039658 - R01
C1 –Public www.u-blox.com
EVK-MAYA-W1
Evaluation kit for MAYA-W1 host-based modules
User guide
Abstract
This document describes how to set up the EVK-MAYA-W1 evaluation kit to evaluate MAYA-W1
series multiradio modules with Wi-Fi and Bluetooth.

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C1 –Public
Document information
Title
EVK-MAYA-W1
Subtitle
Evaluation kit for MAYA-W1 host-based modules
Document type
User guide
Document number
UBX-21039658
Revision and date
R01
24-Nov-2021
Disclosure restriction
C1 –Public
This document applies to the following products:
Product name
Type number
Hardware version
PCN reference
EVK-MAYA-W161
EVK-MAYA-W161-00B-00
Rev. A
N/A
EVK-MAYA-W166
EVK-MAYA-W166-00B-00
Rev. A
N/A
u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this
document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only
permitted with the express written permission of u-blox.
The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or
implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent
documents, visit www.u-blox.com.
Copyright © u-blox AG.

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C1 –Public
Contents
Document information .............................................................................................................................2
Contents .......................................................................................................................................................3
1Kit description......................................................................................................................................4
1.1 Overview........................................................................................................................................................4
1.2 Kit includes...................................................................................................................................................5
1.3 Software........................................................................................................................................................6
1.3.1 Driver source code ..............................................................................................................................6
1.3.2 Calibration data...................................................................................................................................6
1.4 System requirements ................................................................................................................................7
1.5 Operating conditions..................................................................................................................................7
2Getting started....................................................................................................................................8
3Board description............................................................................................................................. 10
3.1 Block diagram ............................................................................................................................................10
3.2 Jumpers and connectors ........................................................................................................................11
3.3 Power supply configuration ....................................................................................................................12
3.3.1 Internal or external supply ..............................................................................................................12
3.3.2 VIO configuration..............................................................................................................................13
3.3.3 Current measurement.....................................................................................................................13
3.4 Boot configuration ....................................................................................................................................13
3.5 Host interfaces..........................................................................................................................................13
3.5.1 SDIO card interface ..........................................................................................................................14
3.5.2 M.2 card interface ............................................................................................................................14
3.5.3 Bluetooth host interface .................................................................................................................15
3.6 Bluetooth audio interface........................................................................................................................16
3.7 GPIOs ...........................................................................................................................................................17
3.8 Antenna interfaces...................................................................................................................................17
3.9 Other interfaces ........................................................................................................................................17
3.10LEDs.............................................................................................................................................................17
3.11Reset button ..............................................................................................................................................18
3.12Schematics.................................................................................................................................................18
Appendix .................................................................................................................................................... 19
AGlossary .............................................................................................................................................. 19
Related documents ................................................................................................................................ 20
Revision history ....................................................................................................................................... 21
Contact....................................................................................................................................................... 22

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1Kit description
The MAYA-W1 series comprises ultra-compact multiradio modules with Wi-Fi 4 and Bluetooth 5.1,
including variants with or without an internal antenna. MAYA-W1 series supports dual band IEEE
802.11a/b/g/n Wi-Fi standards delivering up to 150 Mbps data throughput, and it supports both
Bluetooth BR/EDR and the full Bluetooth Low Energy 5.1 feature set. MAYA-W166 series is based on
the NXP IW416 chipset.
The modules require a host processor and connect to it through SDIO for Wi-Fi, high-speed UART for
Bluetooth, and PCM/I2S for Bluetooth audio. The supported operating systems include Linux and
Android. Wi-Fi/Bluetooth support for RTOS is provided by the NXP MCUXpresso SDK on NXP i.MX RT
MCUs.
EVK-MAYA-W1 allows an external host processor to access several practical features for testing and
evaluating the Wi-Fi and Bluetooth connectivity supported in MAYA-W1 series modules, including:
•External connectors to all host interfaces through SD card and M.2 key E adapters
•USB interface to easily access the Bluetooth UART interface via a USB-to-UART bridge
•Digital and analog audio interfaces for Bluetooth
•SMA connectors for external antennas (EVK-MAYA-W161)
•GPIO pins and other module interfaces are accessible through pin headers
•Multiple power supply options
For more information about MAYA-W1 modules, see also the MAYA-W1 series data sheet [1] and
system integration manual [2].
1.1 Overview
Table 1 lists the available evaluation kit versions:
Evaluation kit
Ordering code
Description
Suitable for evaluation of
EVK-MAYA-W161
EVK-MAYA-W161-00B
Evaluation kit for MAYA-W161:
Two external antennas for dual-band Wi-Fi
4 and Bluetooth 5.1
MAYA-W160, MAYA-W161
EVK-MAYA-W166
EVK-MAYA-W166-00B
Evaluation kit for MAYA-W166:
Single embedded PCB antenna for dual-
band Wi-Fi 4 and Bluetooth 5.1
MAYA-W166
Table 1: Available EVK-MAYA-W1 evaluation kits
Figure 1 shows the main components of the EVK-MAYA-W1 evaluation board.
Figure 1: Evaluation board of EVK-MAYA-W161 overview showing main connectors
SDIO/M.2 card
connector
SMA connectors
for external
antennas
Audio jack
for Bluetooth
USB connector
through FTDI
M.2 card
connector

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1.2 Kit includes
Table 2 shows the various components included in the EVK-MAYA-W1.
Part
Description
Outline
Evaluation board (EVB)
Evaluation board for the MAYA-W1 series
modules.
EVK-MAYA-W161 includes SMA antenna
connectors that connect to external
antennas for Wi-Fi and Bluetooth.
EVK-MAYA-W166 uses the internal PCB
antenna on MAYA-W166.
M.2 Key E adapter
M.2 Key E adapter to connect to M.2 host
sockets. Two flat cables are included in the
EVK to connect the adapter to ZIF
connectors on the EVB:
Molex 15166-0255 102.00 mm Cable
Length, 24 Circuits
Molex 15166-0167, 102.00 mm cable
length, 16x circuits
Micro SD/SDIO adapter
Micro SD to ZIF adapter for Wi-Fi SDIO host
communication. The adapter is compatible
with host sockets designed for micro-SD
cards and supporting SDIO.
Flat cable: Molex 15166-0167, 102.00 mm
cable length, 16x circuits
Full-size SD/SDIO
adapter
Full-size SD to ZIF adapter for Wi-Fi SDIO
host communication. The adapter is
compatible with host sockets designed for
full-size SD cards and supporting SDIO.
Flat cable: Molex 15166-0167, 102.00 mm
cable length, 16x circuits
Type-C USB cable
Type-C USB cable for Bluetooth host
communication over UART connected via
FTDI.
External antennas
2 x Dual band Wi-Fi/Bluetooth antenna,
Linx Technologies ANT-DB1-RAF-SMA
Table 2: EVK-MAYA-W1 component list

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1.3 Software
MAYA-W1 series modules are based on the NXP IW416 chipset. The drivers and firmware required to
operate MAYA-W1 series modules are developed by NXP and are already integrated into the Linux
BSP for the NXP i.MX application processors [3] and the MCUXpresso SDK for NXP MCU devices [5].
The documentation for NXP software releases contains Wi-Fi and Bluetooth release notes and a list
of supported software features. The driver source code is provided free of charge as open source
under NXP licensing terms. As open source software, the drivers can be integrated or ported to other
non-NXP based host platforms. Yocto recipes for the driver and firmware, that can be used to develop
custom Linux-based systems, are part of the NXP i.MX Linux BSP.
1.3.1 Driver source code
The latest version of the driver source code and Wi-Fi/Bluetooth firmware are available from the
following open-source repositories:
•Wi-Fi driver: https://source.codeaurora.org/external/imx/mwifiex/
•Firmware: https://github.com/NXP/imx-firmware/
☞Use the repository branches matching the latest Linux BSP release version. At the time of
document publication, this is release 5.10.52_2.1.0.
The Wi-Fi driver uses the TCP/IP stack from the Linux kernel for data transmission and the cfg80211
subsystem in the kernel for configuration and control. The hci_uart driver from the Linux kernel and
BlueZ host stack are used for the Bluetooth part. For further information about initialization and
configuration of the Wi-Fi and Bluetooth features, see also the NXP User Manual UM11490 [4]
Contact your local u-blox support team for information about additional software options for the
MAYA-W1 series modules.
1.3.2 Calibration data
To ensure that EVK-MAYA-W1 prototypes operate correctly, calibration data must be loaded from
separate configuration files. Calibration data files are available from u-blox for the
MAYA-W160/W161 and the MAYA-W166 modules. Calibration data is downloaded to the module at
driver load time and the calibration file is provided through the cal_data_cfg driver parameter.
Save the calibration file under the /lib/firmware/nxp/ directory on the target system. The
cal_data_cfg parameter can be set in the module parameters configuration file
/lib/firmware/nxp/wifi_mod_para.conf, as shown in this example:
SD8978 = {
cfg80211_wext=0xf
wfd_name=p2p
max_vir_bss=1
cal_data_cfg=nxp/WlanCalData_ext_w161.conf
drv_mode=7
ps_mode=2
auto_ds=2
fw_name=nxp/sdiouartiw416_combo_v0.bin
}

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1.4 System requirements
The evaluation kit has the following system requirements:
•Host (PC or embedded system) with one or more of the following connection options:
oM.2 Key E socket for access to Wi-Fi through the SDIO host interface and for access to
Bluetooth through the UART host interface
oMicro or full-size SD card slot for access to Wi-Fi through the SDIO host interface
oUSB 2.0 interface for access to the Bluetooth UART interface through USB-to-UART bridge
•Supported operating systems:
oLinux (3.x/4.x/5.x)
oAndroid
oFreeRTOS™(through NXP MCUXpresso)
1.5 Operating conditions
Table 3 describes the recommended operating conditions for the EVK-MAYA-W1. For more
information about power supply requirements, see also the MAYA-W1 series data sheet [1].
Symbol
Parameter
Min.
Typ
Max.
Units
3V3
Module 3.3 V power supply voltage
3.14
3.3
3.46
V
1V8
Module 1.8 V power supply voltage
1.71
1.8
1.89
V
VIO / VIO_SD
Module I/O supply voltage
1.8 V
1.62
1.8
1.98
V
3.3 V
2.97
3.3
3.47
V
VBUS_USB
EVB power supply from USB
4.5
5
5.5
V
TA
Ambient operating temperature
-40
-
+85
ºC
Ripple Noise
Peak-to-peak voltage ripple on all supply lines.
-
-
30
mV
Table 3: EVK-MAYA-W1 operating conditions

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2Getting started
This chapter describes the basic settings and procedures to get started with the MAYA-W1 EVK. All
referenced connectors, jumpers, and LEDs are shown in Figure 2.
☞For more detailed information about the available connectors and configuration options, see
also Board description.
Figure 2: Evaluation board of EVK-MAYA-W161 overview showing main connectors
Follow the procedure below to evaluate MAYA-W1 series module using EVK-MAYA-W1:
1. Connect the external antennas for EVK-MAYA-W161. EVK-MAYA-W161 includes two external
dual-band antennas for Wi-Fi and Bluetooth communication, which must be connected to the
SMA connectors (J10 and J11) on the evaluation board.
☞EVK-MAYA-W166 is equipped with an internal PCB antenna and does not include SMA
connectors for connecting external antennas. For more information about the antenna
connectors, see also Antenna interfaces.
2. Connect the host interfaces to the host system. The EVB and supplied M.2 and SDIO adapters
use zero insertion force (ZIF) connectors and flat cables for connecting the adapters. To connect
the cables, gently flip up the small locking flap of the connector, align and insert the flat cable
with the blue marking pointing upwards, and then close the locking flap.
oFor SDIO connection through an SD card socket on the host system, connect the micro or full-
size SD card adapter with the flat cable to the SDIO connector (J3) on the EVB and insert the
adapter card into the host socket. The SDIO interface is used for Wi-Fi communication with
the MAYA-W1 series module.
oA USB-to-UART bridge is included on the evaluation board to access the high speed UART
interface of the MAYA-W1 series module for Bluetooth communication. To use the Bluetooth
interface through USB, connect the included USB cable to the USB type-C connector on the
EVB and connect it to a USB interface on the host system. Make sure that the jumper on J6 is
on pins 1-2 (EXT USB) to enable Bluetooth communication over the USB connector. For
information about accessing the UART interface for Bluetooth directly, see also Bluetooth host
interface.
SDIO/M.2 card [ZIF]
connector (J3)
D2/D3 LEDs
USB/UART
selection (J6)
M.2 card [ZIF]
connector (J2)
USB type-C
connector (J1)
(J1)
SMA [ANT1]
connector(J11)
SMA [ANT0]
connector(J10)

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oEVK-MAYA-W1 can optionally be connected to a host system through an M.2 Key E host
socket. M.2 sockets with mechanical Key E are used on several host platforms, including
platforms based on NXP MPUs and MCUs that support wireless connectivity modules based
on NXP Wi-Fi/Bluetooth radios. M.2 Key E host sockets can support various host interfaces,
including SDIO, UART, USB, and PCM/I2S. For information about using the M.2 interface with
EVK-MAYA-W1, see also M.2 interface.
3. Power on the host system. The Supply LED (D2) on the EVB should turn green to indicate proper
power supply. At this point the module should be detected by the host system.
☞The SDIO/M.2 and USB host sockets are used as default power supply sources for the EVB. For
information about other supply options, see also Power supply configuration.
4. Install the necessary driver software for the MAYA-W1 series module, as described in Software.

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3Board description
3.1 Block diagram
Figure 3 shows a block diagram of the evaluation board with the M.2 and SD card adapters.
Figure 3: Block diagram of the EVB and adapter cards

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3.2 Jumpers and connectors
Figure 4 shows an outline of the evaluation board and the placement of the connectors and pin
headers for jumper configuration. The EVB makes all the interfaces of the MAYA-W1 series module
accessible through connectors or pin headers.
Figure 4: EVK-MAYA-W1 connectors and default jumper configuration
J1: USB
J6: USB/UART
selection
J7: Int/Ext
supply
J2: M.2
card
J3: SDIO /
M.2 card
SW1: Reset
button
J8: VIO
config
J14: RF
control
J15:
Coex.
J16: Audio
jack
J11: ANT1
J10: ANT0
J13: Boot
config.
J12: Sleep
clock enable
J9: Current
measurement
J4/J5:
GPIOs
D2/D3:
LEDs

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Table 4 provides a summary of the connectors and pin headers available on the evaluation board.
Designator
Function
Description
J1
USB connector
USB type-C connector for Bluetooth host interface
J2
M.2 card connector
Connector for M.2 card adapter
J3
SDIO/M.2 card connector
Connector for SDIO or M.2 card adapter
J4/J5
GPIOs
Module GPIOs and interfaces
J6
USB/UART selection
Pin header for USB/UART Bluetooth host interface selection
J7
Internal/external supply
selection
Pin header for internal or external power supply selection
J8
VIO configuration
Pin header for VIO voltage configuration
J9
Current measurement
Pin header for current measurements
J10
ANT0
SMA connector for WLAN antenna interface (only on EVK-MAYA-W161)
J11
ANT1
SMA connector for Bluetooth antenna interface (only on EVK-MAYA-W161)
J12
Sleep clock enable
Pin header to enable/disable sleep clock
J13
Boot configuration
Pin header for MAYA-W1 boot configuration
J14
RF controls
Pin header for RF control signals. See also Other interfaces
J15
Coexistence interface
Pin header for coexistence interface See also Other interfaces
SW1
Reset button
Reset button
D2/D3
LEDs
Power supply and UART activity indicator LEDs
Table 4: MAYA-W1 evaluation board connectors
3.3 Power supply configuration
MAYA-W1 series modules are supplied with 3.3 V (3V3), 1.8 V (1V8), and selectable VIO/VIO_SD
voltages. Power supply for the EVB can be provided from the SDIO, M.2 or USB host sockets and
internal DC-DC, or from external sources. The following power supply options are available on the EVB:
•SDIO or USB interfaces: The EVB is powered from the SDIO/M.2 or USB host sockets. All internal
voltages are generated by DC-DC converters on the EVB.
•External sources: 3.3 V and 1.8 V voltages for the board are supplied from external power sources
through connector J7.
The current consumption of the MAYA-W1 module can be measured individually on each supply rail.
3.3.1 Internal or external supply
The EVB can be supplied through the host interfaces and voltages generated by internal DC-DC. To
use internal supplies, place jumpers on pins 1-2 and 3-4 of pin header J7 (default configuration).
To use external power sources, remove the jumpers and connect the supplies directly to the BRD_3V3,
BRD_1V8, and GND pins on J7.
Figure 5: Internal/external supply (J7)

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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 Bluetooth host interface.
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 SDIO card interface, M.2 card interface,
and Bluetooth host interface.
1
SDIO-SDIO is supported by hardware, but not productized in software.

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3.5.1 SDIO card interface
Micro SD and full-size SD card adapters are included in the EVK to connect the evaluation board to
SDIO capable host sockets. To use one of the SDIO card adapters, connect it with the smaller flat
cable to the ZIF connector J3 on the EVB. All SDIO signals are directly connected to the MAYA-W1
module through 22 Ωseries resistors. The SDIO interface can be used for power supply of the EVB.
☞The SDIO card adapters support only the SDIO interface, which is used for Wi-Fi
communication of the MAYA-W1 module. The M.2 card adapter supports additional
interfaces, including UART for Bluetooth communication.
Figure 8: SDIO or M.2 card ZIF connector (J3)
3.5.2 M.2 card interface
An M.2 Key E card adapter is included in the EVK to connect the evaluation board to M.2 Key E host
sockets. To use the M.2 adapter, connect it with both flat cables to the matching ZIF connectors J2
and J3 on the EVB.
MAYA-W1 SDIO signals are connected through connector J3. Connector J2 provides additional
MAYA-W1 interfaces and signals to the M.2 interface, including UART (optionally through USB),
PCM/I2S, JTAG, and other sideband signals. To enable the various interfaces and connect MAYA-W1
signals to connector J2, jumpers must be placed on pin headers J4 and J5 . For information about
connecting the available MAYA-W1 interfaces to the M.2 card connector, see also Figure 9.
The M.2 interface signals M2_UART_WAKE#, M2_W_DISABLE1#, and M2_W_DISABLE2# use 3.3 V
signal voltage with voltage translators on the EVB. See Schematics for details. All other signals are
powered from the board VIO voltage.

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Figure 9: M.2 card ZIF connector (J2) and pin headers J4/5
The M.2 Key E pinout follows the definition from NXP for M.2 sockets on platforms based on NXP
MPUs and MCUs. For more information about the Wi-Fi/Bluetooth M.2 Key E Pinout Definition on NXP
host boards, see also the NXP AN13049 pin definition [6].
☞Some interfaces might not be available on the M.2 socket of a host platform. Check the
interface connector specification from the host platform vendor to confirm the pinout and
supported interfaces.
3.5.3 Bluetooth host interface
MAYA-W1 series provides a UART host interface for Bluetooth communication. The UART interface
can be either accessed directly through pin header J4, or connected to the M.2 card connector J2
using jumpers. The EVB includes a USB-to-UART bridge (FT234XD) for accessing the UART interface
through USB. Access is provided through the USB type-C connector J1 or the USB lines on the M.2
card interface. The USB type-C connector can be used for the EVB power supply.

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The routing and selection of the Bluetooth host interface modes is configured using the jumpers on
pin header J6 and J4, as shown in Figure 10 and also Figure 9.
Figure 10: USB/UART selection (J6)
The configuration options for the Bluetooth host interface modes are described in Table 5.
Bluetooth host interface mode
Jumper positions
Description
USB on type-C connector J1
J6: 1-2 (default)
J4: UART pins open
The Bluetooth UART interface is available through USB-to-
UART bridge on USB type-C connector J1
USB on M.2 connector J2
J6: 3-4
J4: UART pins open
The Bluetooth UART interface is available through USB-to-
UART bridge on M.2 card connector J2 (using the USB lines of
the M.2 socket)
UART on M.2 connector J2
J6: 5-6 or open
J4: UART pins bridged
The Bluetooth UART interface is directly available on M.2 card
connector J2 (using the UART lines of the M.2 socket). Jumpers
must be placed on J4 to connect the MAYA-W1 UART signal
lines to J2.
Direct UART access
J6: 5-6 or open
J4: UART pins open
The Bluetooth UART interface is directly available on the UART
pins of J4.
Table 5: Bluetooth host interface selection options
3.6 Bluetooth audio interface
For Bluetooth voice applications, MAYA-W1 EVB includes a MAX9860 16-bit audio codec that
connects to the PCM/I2S interface of the module. It also includes a 3.5 mm audio jack (J16) for
connecting a headset. The MAX9860 codec is driven by 19.2 MHz master clock (MCLK) and is
completely controlled through software using an I2C interface. The codec responds to the I2C slave
address 0x20 for all write commands and 0x21 for all read operations.
The I2C interface of the audio codec is provided on connector J5, as shown in Table 6. The PCM/I2S
interface of the MAYA-W1 module is directly connected to the serial audio interface of the MAX9860
audio codec. The PCM pins are shared with the I2S interface and extend to connector J4, as shown in
Table 6.
Name
I/O
Connector / pin no.
Description
I2C_SDA
I/O
J5 / 16
I2C Serial-Data Input/Output
I2C_SCL
I
J5 / 18
I2C Serial-Data clock
PCM_CLK
I/O
J4 / 2
PCM clock
Alternate function: I2S clock
PCM_SYNC
I/O
J4 / 4
PCM frame sync
Alternate function: I2S word select
PCM_DOUT
O
J4 / 6
PCM data out
Alternate function: I2S data out
PCM_DIN
I
J4 / 8
PCM data in
Alternate function: I2S data in
Table 6: Audio interfaces

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3.7 GPIOs
Figure 9 shows the pin headers J4 and J5 that provide direct access to the UART, JTAG, GPIO and
PCM/I2S interfaces on the MAYA-W1 module. The interface signals are connected through jumpers
to the M.2 card interface connector J2 or accessed directly through the pin headers.
3.8 Antenna interfaces
The evaluation board of EVK-MAYA-W161 includes two standard 50 Ωfemale SMA connectors for
connecting external antennas or measurement instruments. EVK-MAYA-W166 uses the internal PCB
antenna of MAYA-W166.
Table 7 describes the available radio interfaces of the MAYA-W1 module and the respective antenna
interfaces on the EVB.
Product name
Module antenna interface
Function
Antenna interface on EVB
EVK-MAYA-W161
RF_ANT0
2.4/5 GHz Wi-Fi
SMA connector J10
RF_ANT1
Bluetooth
SMA connector J11
EVK-MAYA-W166
Internal PCB antenna
2.4/5 GHz Wi-Fi and Bluetooth
-
Table 7: Antenna interface configuration
☞Connect the external antennas supplied with EVK-MAYA-W161 to the SMA connectors J10
and J11. If 2.4 GHz Wi-Fi and Bluetooth are used at the same time, bend the antennas at a 90°
angle to each other or use a coaxial RF cable to increase isolation between the antennas.
3.9 Other interfaces
An optional external sleep clock for driving the MAYA-W1 module can be enabled by placing a jumper
on J12. Figure 11 shows the module RF control signals and the WCI-2 coexistence interface
accessible on J14 and J15.
Figure 11: RF controls (J14) and coexistence (J15) interfaces
3.10 LEDs
Table 8 describes the function and designation of the available LEDs on the EVK-MAYA-W1
evaluation board.
Function
Description
Designator
Color
Supply
Board 3.3 V and 1.8 V power supply status indication
D2
Green
UART
UART RX/TX activity indication
D3
Orange
Table 8: LED function

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3.11 Reset button
Press the SW1 button on the EVB to reset the MAYA-W1 module. When pressed, SW1 asserts the
PDnpin of the MAYA-W1 module to enter power down mode, while keeping the supply rails enabled.
The module is automatically reset when it exits the power down mode, which means that the firmware
must be downloaded again.
3.12 Schematics
Complete schematics for the MAYA-W1 evaluation board are available on request. For further
information, contact your local u-blox support team.

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Appendix
AGlossary
Abbreviation
Definition
EVB
Evaluation board
EVK
Evaluation kit
HCI
Host controller interface
I/O
Input / output
I2S
Inter-Integrated circuit sound
LED
Light-Emitting Diode
LDO
Low-dropout regulator
LPO
Low-power oscillator
LTE
Long-Term Evolution
MAC
Medium access control
MIMO
Multiple input multiple output
MMC
Multimedia card
PC
Personal computer
PCI
Peripheral component interconnect
PCIe
Peripheral component interconnect express
PCM
Pulse-code modulation
SD
Secure digital
SDIO
Secure digital input output
UART
Universal asynchronous receiver/transmitter
USB
Universal serial bus
Wi-Fi
Wireless local area network
ZIF
Zero Insertion Force
Table 9: Explanation of the abbreviations and terms used

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Related documents
[1] MAYA-W1 series data sheet, UBX-21006380
[2] MAYA-W1 system integration manual, UBX-21010495
[3] Embedded Linux for i.MX Applications Processors
[4] NXP UM11490 - Feature Configuration Guide for NXP-based Wireless Modules on i.MX 8M Quad
EVK
[5] MCUXpresso Software Development Kit (SDK)
[6] NXP AN13049 - Wi-Fi/Bluetooth M.2 Key E Pinout Definition
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