Radar Modes Setup; Td And Pd Signals; Advance Mode" And Quad-State Inputs; Advance Mode - Infineon XENSIV BGT60LTR11AIP Manual

XENSIV™ BGT60LTR11AIP Radar Shield2Go
Super low-power 60 GHz Doppler radar sensor with antennas-in-package

Radar modes setup

4 Radar modes setup
4.1

TD and PD signals

With the Shield2Go you can adjust all four quad-state signals (QS1 to QS4) mechanically rather than via
software. Use the potentiometers and switches to adjust all quad states in autonomous mode. In SPI mode,
you can adjust all QS signals by changing the BGT60LTR11AIP registers.
The default direction information is set to "approaching". The truth table for the output pad voltage is shown in
Table 1.
Truth table for the output pad voltage
Output pad voltage
TD
high
low
low
The BGT60LTR11AIP provides four quad-state inputs, QS1 to QS4. With one quad-state input, it is possible to
get four states from one input pin. These pins are used to configure the chip.
4.2

"Advance mode" and quad-state inputs

On reset of the digital main controller and during the initialization sequence some chip input pins are sampled
to determine the configuration the chip should start with. Figure 12 shows the schematics of the default
configuration for the MMIC operation modes and settings.
Figure 12 MMIC operation modes and settings (n.m. = not mounted)
4.2.1

"Advance mode"

When the PLL_Trig pin is "0" as the digital main controller wakes up from reset, the chip boots in basic mode
(not advanced mode). When the pin is kept at "1" during chip boot and QS1 is either GND or OPEN, pins SPIDI
Application Note
Motion
PD
high No
low Yes
high Yes
page 15 of 32
Approaching/Departing
N.A.
Departing
Approaching
2022-12-15
V1.0