Manualshelf

Data Sheet

ManualsBrandsWaveshare ManualsUART/SPI/I2C GPS ModulesUART NEO-7M-C GPS Module
12345678910
NEO-7 - Data Sheet
UBX-13003830 - R04 Early Production Information Functional description
Page 10 of 26
1.8 EXTINT: External interrupt
EXTINT is an external interrupt pin with fixed input voltage thresholds with respect to VCC. It can be used for
control of the receiver or for aiding.
For more information about how to implement and configure these features see the u-blox 7 Receiver
Description including Protocol Specification [2] and the MAX-7 / NEO-7 Hardware Integration Manual [1].
1.8.1 Pin Control
The pin control feature allows overriding the automatic active/inactive cycle of Power Save Mode. The state of
the receiver can be controlled through the EXTINT pin.
The receiver can also be forced OFF using EXTINT when Power Save Mode is not active.
1.8.2 Aiding
The EXTINT pin can be used to supply time or frequency aiding data to the receiver.
For time aiding, hardware time synchronization can be achieved by connecting an accurate time pulse to the
EXTINT pin.
Frequency aiding can be implemented by connecting a periodic rectangular signal with a frequency up to 500
kHz and arbitrary duty cycle (low/high phase duration must not be shorter than 50 ns) to the EXTINT pin. Provide
the applied frequency value to the receiver using UBX messages.
1.9 TIMEPULSE
A configurable time pulse signal is available with all u-blox 7 modules.
The TIMEPULSE output generates pulse trains synchronized with GNSS or UTC time grid with intervals
configurable over a wide frequency range. Thus it may be used as a low frequency time synchronization pulse or
as a high frequency reference signal.
By default the time pulse signal is configured to 1 pulse per second. For more information see the u-blox 7
Receiver Description including Protocol Specification [2].
1.10 Protocols and interfaces
Protocol Type
NMEA Input/output, ASCII, 0183, 2.3 (compatible to 3.0)
UBX Input/output, binary, u-blox proprietary
RTCM Input, 2.3
Table 3: Available Protocols
All protocols are available on UART, USB, DDC (I
2
C compliant) and SPI. For specification of the various protocols
see the u-blox 7 Receiver Description Including Protocol Specification [2].