YS05S16-0G Datasheet, PDF (8/23 Pages) List of Unclassifed Manufacturers – GPS Module TC6000GN-P1

GPS Module TC6000GN-P1
Datasheet V022
confidential information preliminary specification
6.6 Pulse Per Second (PPS)
TC6000GN provide a so called Pulse Per Second (PPS) for timing purposes. After calculation of a 3D
postion fix, the PPS signal is accurately aligned to the GPS seconds boundaries. The pulse
generated is approximately 1 millisecond in duration and the repetition rate is 1 second.
T2
T1
T1 = 1ms T2 = 1sec
More information about the accuracy of the time pluse, please refer to
http://processors.wiki.ti.com/index.php/CC4000_GPS_for_MCU “GPS PPS Timing Application
Note”.
6.7 Fix Available
The FIX AVAILABLE signal is used to indicate the availability of GPS postion information. This is
typically used to drive an LED buffer so that the state of the device can be easily indicated. The
table below lists the various states.
State
Initial boot up
PUSH_TO_FIX low
PUSH_TO_FIX on and aquisition
PUSH_TO_FIX on and loss of fix
PUSH_TO_FIX on and postion fix
Indication
low
low
Toggling (900ms low and 100ms high)
Toggling (900ms low and 100ms high)
continuously high
6.8 GPS Antenna
TC6000GN contains all input circuitry needed to connect a passive GPS antenna directly. Depending
on the application patch- or chip antennas or combo antennas (combination of GPS and Bluetooth)
can be used. However, if there is a long wire between TC6000 GPS RF input and antenna, there
should be an LNA (on the antenna side) to compensate for cable losses ("active" antenna). For
active antenna configuration, the antenna supply DC must be blocked from the antenna signal line
with a inductor L of 270nH and a 100pF capacitor C as shown in the diagram below.
8
© GNS-GmbH 2011
V 0.22, Sep5^th 2012