Ublox EVK-MAYA-W2, Руководство пользователя

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EVK-MAYA-W2 - User guide
UBX-22011269 - R04 Board description Page 12 of 20
C1 – Public
Table 5 provides a summary of the connectors and pin headers shown in Figure 4 .
Designator Function Description
J1 USB connector USB type-C connector for Bluetooth host interface
J2 M.2 card connector ZIF connector for M.2 card adapter
J3 SDIO/M.2 card connector ZIF 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 Wi-Fi antenna interface
J11 ANT1 SMA connector for Bluetooth/802.15.4 antenna interface
J12 Host interface configuration, RF
controls, coexistence interface Pin header for MAYA-W2 Host interface configuration and RF control
and coexistence interfaces
J13 SPI interface Pin header for SPI host interface for IEEE 802.15.4
J14 JTAG JTAG connector for MAYA-W2 (not assembled)
SW1 Reset button Reset button
D2/D3 LEDs Power supply and UART activity indicator LEDs
Table 5: MAYA-W2 evaluation board connectors
3.3 Power supply configuration
MAYA-W2 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-W2 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)