Infineon MCU4 Manual

Radar baseboard

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Download this manual

AN602

Radar Baseboard MCU4

XENSIV™ 24 GHz radar system platform

B o a r d v e r s i o n V 2 . 0

About this document

Scope and purpose

This application note describes the Radar Baseboard MCU4 (DEMO RADAR MCU4), part of Infineon's XENSIV™

24 GHz radar system platform. It also introduces the concept of the platform, which supports multiple sensors.

At the heart of the board is the XMC4700, a 32-bit Arm® Cortex®-M4 MCU. It also has a high-speed USB 2.0 interface

to host a computer for visualization or fast data processing. In addition, the board is compatible with the Arduino

standard, which facilitates access to existing mass-market daughter boards for mass data storage or wireless

communication Arduino boards.

Intended audience

This document is intended for anyone working with Infineon's XENSIV™ 24 GHz radar system platform.

Summary of Contents for Infineon MCU4

Page 1: About This Document
About this document Scope and purpose This application note describes the Radar Baseboard MCU4 (DEMO RADAR MCU4), part of Infineon’s XENSIV™ 24 GHz radar system platform. It also introduces the concept of the platform, which supports multiple sensors. At the heart of the board is the XMC4700, a 32-bit Arm® Cortex®-M4 MCU. It also has a high-speed USB 2.0 interface to host a computer for visualization or fast data processing.
Page 2: Table Of Contents
Table of contents ..........................2 List of figures ..........................3 List of tables ..........................4 Introduction .......................... 5 Key features ............................. 5 Hardware description – Radar Baseboard MCU4 ................ 6 Overview ..............................6 Block diagram ............................7 Power supply ............................7 2.3.1 Battery and external power supply ....................
Page 3: List Of Figures
XENSIV™ 24 GHz radar system platform List of figures List of figures Figure 1 Radar Baseboard MCU4 with main components and dimensions ............ 6 Figure 2 Block diagram – Radar Baseboard MCU4 ................... 7 Figure 3 Block diagram – power supply concept ..................... 8 Figure 4 P8 header configuration for using battery or external power supply ..........
Page 4: List Of Tables
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform List of tables List of tables Table 1 User LEDs pin assignment ......................... 14 Table 2 External header (P2) – pin description ..................... 16 Table 3 External header (P3) – pin description ..................... 17 Table 4 External header (P4) –...
Page 5: Introduction
Introduction Introduction The Radar Baseboard MCU4 is a generic sensor interface for Infineon’s 24 GHz radar sensors. The central MCU can perform radar data processing or forward the sensor data to a USB interface or an Arduino interface. The board is designed to allow customers to do prototyping and system integrations as well as initial product feature evaluations.
Page 6: Hardware Description - Radar Baseboard Mcu4
Overview The Radar Baseboard MCU4 is shown in Figure 1. The board makes it possible to implement different settings to get closer to a custom-fit solution for the use case. It also makes it possible to quickly gather sampled radar data that can be used to develop radar signal-processing algorithms on a PC or implement target detection algorithms directly on the microcontroller using DAVE™.
Page 7: Block Diagram
Figure 2 Block diagram – Radar Baseboard MCU4 Power supply The Radar Baseboard MCU4 is powered via external 7 V power, battery or two micro-USB cables. Figure 3 shows the power supply concept used in the system. Application Note V2.1...
Page 8: Battery And External Power Supply
Battery and external power supply The Radar Baseboard MCU4 can be powered up with an external power supply (7 V) to operate the board. It is also possible to charge the battery using an onboard battery manager. This section explains the battery charging and external power supply feature of the board.
Page 9: External Power Supply Operation With Battery Charging
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Hardware description – Radar Baseboard MCU4 2.3.1.2 External power supply operation with battery charging The Radar Baseboard XCM4700 allows the user to use an external 7 V power supply for operation or to charge the battery.
Page 10: Figure 7 Battery Operation - Block Diagram
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Hardware description – Radar Baseboard MCU4 The operation of the baseboard using the battery is shown in Figure 7. When the baseboard is not connected to an external power supply, the LDO (G1) has no input voltage and remains disabled. Consequently, the battery manager (U1) has no input voltage and does not charge the battery.
Page 11: Usb Operation
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Hardware description – Radar Baseboard MCU4 2.3.2 USB operation The baseboard can also be powered through two USB cables, as shown in Figure 9. It is also possible to use a single USB cable for operation.
Page 12: Current Measurement Of Radar Sensor Shields
This is done using the current sensors on the board (U2, U3 and U4). If a measurement of the actual operating current consumption of the sensor is required, shunt resistors are provided on the Radar Baseboard MCU4. The shunt resistors (R9, R22 and R32) are in series to the supplies of the Radar shield, as illustrated in Figure 10. By measuring the voltage drop along the respective shunt resistor, the user can infer the current supplied to the Radar shield and multiply it by the voltage supplied to measure the power consumption.
Page 13: Microcontroller Unit - Xmc4700
Hardware description – Radar Baseboard MCU4 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.
Page 14: User-Configurable Button
P1.14 D9, D10 (blue LED) P1.13 User-configurable button The Radar Baseboard MCU4 has a user-configurable button, S1, for additional functionality and flexibility for the user. It is interfaced with XMC4700 at the P8.8 pin. Figure 13 User-configurable button SD card reader The baseboard also has a SD card reader connected to the XMC4700’s SDMMC block.
Page 15: Figure 15 Level Translator (U6, U7 And U8) Connections
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Hardware description – Radar Baseboard MCU4 Figure 15 Level translator (U6, U7 and U8) connections Application Note V2.1 2023-02-14...
Page 16: Connectors
XENSIV™ 24 GHz radar system platform Connectors Connectors Figure 16 shows the pin headers on the Radar Baseboard MCU4 and Table 2, Table 3, Table 4 and Table 5 describe the pins. Figure 16 External headers – P2, P3, P4, P5 and P6 Table 2 External header (P2) –...
Page 17: Table 3 External Header (P3) - Pin Description
External header (P3) – pin description Pin no. Signal name Pin description Voltage reference at which the external board interfacing with the IOREF Radar Baseboard MCU4 is operating. Can be selected via P7. RESET Resets the Radar Baseboard MCU4 VCC_ARD_4 3.3 V VCC_ARD_5...
Page 18 Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Connectors Notes: Pin 8 of header P2 is not connected to any signal. Pins 1 and 8 of header P3 are not connected to any signal. Pins on P2 and P4 can primarily be used as general-purpose IOs.
Page 19: Firmware Development And Debugging
Firmware development and debugging The Radar Baseboard MCU4 comes with a default firmware that is intended to serve as a bridge between a host (typically a PC) and the Radar shields, which are mounted on the connectors. For this, the firmware implements logic to: •...
Page 20: Figure 18 P8 Header Connections - For Onboard Debugger, For External Debugger (V1.1 Only)
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Firmware development and debugging Table 7 and Figure 18 show the different header settings for using different types of debuggers for V1.1. Table 7 Debugger type and header settings (V1.1 only)
Page 21: Onboard Debugger And Uart Connection
4.1.1 Onboard debugger and UART connection The Radar Baseboard MCU4 features an onboard debugger, which comes preloaded with licensed firmware for debugging and communicating with the main radar MCU via the UART pins. The onboard debugger supports two-pin SWD and UART communication. Both require the installation of SEGGER’s J-Link driver, which is part of the DAVE™...
Page 22: Authors
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Authors Authors Radar Application Engineering Team, Business Line “Radio Frequency and Sensors” Application Note V2.1 2023-02-14...
Page 23: References
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform References References [1] Infineon XMC4700 32-bit Arm® Cortex®-M4 microcontroller – datasheet [2] Infineon application note – AN598 – Demo Sense2GoL Pulse [3] Infineon application note – AN615 – Demo Distance2GoL Application Note V2.1...
Page 24: Revision History
Radar Baseboard MCU4 XENSIV™ 24 GHz radar system platform Revision history Revision history Document Date Description of changes revision V1.0 2020-02-07 Initial version V2.0 2021-03-18 Updated based on board version V2.0 V2.1 2023-02-14 Miscellaneous document cleanup updates Application Note V2.1...
Page 25 Infineon Technologies hereby disclaims dangerous substances. For information on the types © 2023 Infineon Technologies AG. any and all warranties and liabilities of any kind in question please contact your nearest Infineon All Rights Reserved. (including without limitation warranties of non- Technologies office.

This manual is also suitable for:

Radar baseboard mcu4