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Radar Baseboard MCU4
XENSIV™ 24 GHz radar system platform
Hardware description – Radar Baseboard MCU4
2.6
Microcontroller unit – XMC4700
The Radar Baseboard MCU4 uses an XMC4700 32-bit Arm® Cortex®-M4 MCU to perform the radar signal
processing. The XMC4700 takes care of communication with all the sub-systems on the radar module, enables
data acquisition, performs the complete radar signal processing (including sampling and FFT) and
communicates the results via its UART or USB interface to an external device.
An XMC4700 in a 194-pin BGA package is used, featuring a 144 MHz CPU frequency, 2048 kB Flash and 352 kB RAM.
Four 12-bit ADCs help to implement the radar signal sampling and also acquire the various sensor data from the
BGT24LTR11 MMIC. The MCU also has a USB 2.0 device interface, which enables direct communication with a PC.
Figure 11 shows a system block diagram of the XMC4000 series MCUs.
Please refer to the
XMC4700/XMC4800 datasheet
Figure 11
Block diagram – XMC4700
2.7
User-configurable LEDs
Pins of the XMC47000 on the Radar Baseboard are connected to external LEDs on the top and bottom of the
PCB for status indication. Table 1 lists the user-configurable LEDs pin assignment. There is a set of three LEDs
on each side of the PCB.
Figure 12
User-configurable LEDs
Application Note
for detailed information on the microcontroller.
13
V2.1
2023-02-14
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