Integration Manual

JODY-W3 series - System integration manual
UBX-19011209 - R07 System description Page 20 of 71
C2-Restricted
1.7.2 Approved antenna designs
JODY-W3 modules come with a pre-certified antenna design that can be used to save cost and time
during the certification process. To leverage this benefit, customers are required to implement an
antenna layout that is fully compliant with the u-blox reference design outlined in this document.
Reference design source files are available from u-blox on request.
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For Bluetooth and Wi-Fi operation, JODY-W3 modules have been tested and approved for use with
the antennas listed in the JODY-W3 series data sheet [1].
u-blox modules may also be integrated with other antennas. In which case, OEM installers must
certify their own designs with the respective regulatory agencies.
1.8 Other remarks
1.8.1 Unused pins
JODY-W3 series modules have unconnected (NC) pins that are reserved for future use. These pins
must be left unconnected on the application board.
1.8.2 GPIO usage
GPIOs are used to connect the JODY-W3 series module to various external devices. Table 15 shows
the typical assignments for some of the GPIO pins. Other GPIO signals shown in Table 15 have not yet
been assigned by the chip manufacturer. The exact function of these signals is normally dependent
on the firmware releases.
GPIO
Module pin
Function
GPIO[15]
WL_HOST_WAKE
Wi-Fi to host wake-up signal
GPIO[16]
BT_HOST_WAKE
Bluetooth to host wake-up signal
GPIO[18]
GPIO_18
Wi-Fi independent reset
GPIO[19]
GPIO_19
Bluetooth independent reset
GPIO[0]
GPIO_0
Indicates the sleep mode of the module. Put to test point for debug purpose.
Table 15: Assigned GPIO functions
☞ Some GPIOs are used as configuration pins during boot-up. See also Configuration pins.
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Reference design will be available after certification.