Infineon XMC4700 User Manual
Application Note Please read the Important Notice and Warnings at the end of this document V2.0
www.infineon.com page 1 of 26 2021-03-18
AN602
Radar Baseboard XMC4700
24 GHz radar system platform
B o ar d v e r si o n V 2.0
About this document
Scope and purpose
This application note describes the key features of Infineon’s Radar Baseboard XMC4700, part of Infineon’s 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 24 GHz radar system platform.
Related documents
Additional information can be found in the supplementary documentation provided with the Sense2GoL Pulse
or Distance2GoL Kits in the Infineon Toolbox or from www.infineon.com/24GHz:
• 24 GHz Radar Tools and Development Environment User Manual
• Sense2GoL Pulse Application Note (AN598)
• Distance2GoL Application Note (AN615)
Application Note page 2 of 26 V2.0
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Radar Baseboard XMC4700
24 GHz radar system platform
Table of contents
Table of contents
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 2
List of figures ................................................................................................................................. 3
List of tables .................................................................................................................................. 4
1 Introduction .......................................................................................................................... 5
1.1 Key features ............................................................................................................................................. 5
2 Hardware description: Radar Baseboard XMC4700 ..................................................................... 6
2.1 Overview .................................................................................................................................................. 6
2.2 Block diagram .......................................................................................................................................... 7
2.3 Power supply ........................................................................................................................................... 7
2.3.1 Battery and external power supply ................................................................................................... 8
2.3.1.1 Hardware changes (for V1.1 only) ................................................................................................ 8
2.3.1.2 External power supply operation with battery charging............................................................. 9
2.3.3 USB operation .................................................................................................................................. 11
2.4 Current measurement of radar sensor shields .................................................................................... 12
2.5 EEPROM ................................................................................................................................................. 12
2.6 Microcontroller unit – XMC4700 ............................................................................................................ 13
2.7 User-configurable LEDs ......................................................................................................................... 13
2.8 User-configurable button ..................................................................................................................... 14
2.9 SD card reader ....................................................................................................................................... 14
2.10 Level shifters .......................................................................................................................................... 14
3 Connectors ........................................................................................................................... 16
4 Firmware development and debugging ................................................................................... 19
4.1 Debugging .............................................................................................................................................. 19
4.1.1 Onboard debugger and UART connection ...................................................................................... 21
5 Frequency band and regulations ............................................................................................. 22
5.1 24 GHz regulations ................................................................................................................................ 22
5.2 Regulations in Europe ........................................................................................................................... 22
5.3 Regulations in the United States of America ........................................................................................ 22
6 Authors ................................................................................................................................ 23
7 References ........................................................................................................................... 24
Revision history............................................................................................................................. 25
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Radar Baseboard XMC4700
24 GHz radar system platform
List of figures
List of figures
Figure 1 Radar Baseboard XMC4700 with main components and dimensions .............................................. 6
Figure 2 Block diagram – Radar Baseboard XMC4700 ..................................................................................... 7
Figure 3 Block diagram – power supply concept ............................................................................................. 8
Figure 4 P8 header configuration for using battery or external power supply ............................................... 8
Figure 5 External power supply and battery charging – block diagram .......................................................... 9
Figure 6 External power supply and battery charging – schematic ................................................................ 9
Figure 7 Battery operation – block diagram ................................................................................................... 10
Figure 8 Battery operation – schematic ......................................................................................................... 10
Figure 9 Operation with USB cables ............................................................................................................... 11
Figure 10 Current sensors connections ............................................................................................................ 12
Figure 11 Block diagram – XMC4700 ................................................................................................................. 13
Figure 12 User-configurable LEDs ..................................................................................................................... 13
Figure 13 User-configurable button ................................................................................................................. 14
Figure 14 SD card reader connections .............................................................................................................. 14
Figure 15 Level translator (U6, U7 and U8) connections .................................................................................. 15
Figure 16 External headers – P2, P3, P4, P5 and P6.......................................................................................... 16
Figure 17 V1.1 Debugger components ............................................................................................................. 19
Figure 18 P8 header connections – for onboard debugger, for external debugger (V1.1 only)...................... 20
Figure 19 V2.0 Debugger components – For debugging and flashing, the USB cable has to be simply
connected to the “Debug USB” port. Header settings are no longer needed. .............................. 20
Figure 20 Recommended installation options for the J-Link driver ................................................................ 21
Application Note page 4 of 26 V2.0
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Radar Baseboard XMC4700
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) – pin description ............................................................................................. 17
Table 5 External header (P5) – pin description ............................................................................................. 17
Table 6 External header (P6) – pin description ............................................................................................. 17
Table 7 Debugger type and header settings (V1.1 only) ............................................................................... 20
Table 8 XMC4200 pins used for debugging and UART communication ....................................................... 21
Application Note page 5 of 26 V2.0
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Radar Baseboard XMC4700
24 GHz radar system platform
Introduction
1 Introduction
The Radar Baseboard XMC4700 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.
An onboard debugger with licensed firmware from SEGGER, it also allows easy debugging over USB. Infineon’s
powerful, free-of-charge toolchain DAVE™ can be used for programming the XMC4700 microcontroller. This
application note describes the key features and hardware configuration of the Radar Baseboard XMC4700 in
detail.
1.1 Key features
The primary features of the Radar Baseboard XMC4700 are:
• XMC4700 – 32-bit Arm® Cortex®-M4 based microcontroller for signal processing
• Multiple power supply possibilities – micro-USB, external power supply or battery
• Compatible with Arduino for ease of use and prototyping
• Current sensors for current consumption estimation
• Onboard debugger for debugging
• SD card reader for raw data storage
• User-configurable LEDs
• User-configurable button
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Radar Baseboard XMC4700
24 GHz radar system platform
Hardware description: Radar Baseboard XMC4700
2 Hardware description: Radar Baseboard XMC4700
This section presents a detailed overview of the Radar Baseboard XMC4700 hardware specifications, including
features, power supply and board interfaces.
2.1 Overview
The Radar Baseboard XMC4700 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™.
XMC4200
debugger MCU
Cortex debugger
connector
Debug USB
External
power
connector
Linear charge
management
controller
LiPo battery
connector
LDO
Current
Sensor
Arduino-compatible
connectors
SD card
reader
XMC4700 MCU
Voltage level
tanslator
Current
Sensor
Current
Sensor
Connectors to
BGT24LTR11
Shield
LDO
J-K Flipflop
85 mm
55 mm
Figure 1 Radar Baseboard XMC4700 with main components and dimensions
Application Note page 7 of 26 V2.0
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Radar Baseboard XMC4700
24 GHz radar system platform
Hardware description: Radar Baseboard XMC4700
2.2 Block diagram
Figure 2 shows the block diagram of the Radar Baseboard XMC4700. It features Infineon’s XCM4700, 32-bit Arm®
Cortex®-M4 based microcontroller for signal processing. It has two connectors to interface with the RF shield.
The board also has several debugging possibilities such as Tag connect, cortex connector and also an onboard
debugger. For user flexibility, it has three configurable LEDs that can be used for status indication and also a
configurable button. A SD card reader is also available for data storage.
The board is powered via the micro-USB cables. It is also possible to power it via external 7 V power supply or
with a battery. A series of low-noise voltage regulators is used to provide a regulated power supply to the
different building blocks of the board and the connected shield. There are three current sensors on the board
for measuring current consumption of the connected shield or Arduino.
Connectors b/w Base Board and Radar Shield
ADC
ADC
ADC
ADC
CCU8
CCU4
USIC
XMC4700
SD card
reader
SDMMC
UART
SWD
SCK
Debug
LED
12
MHz
User LED
XMC4200
(Debugger)
12
MHz
LDO
LDO
LDO
3.3V
VCC1
R
shunt
7V
External Power Supply
5Vinput
5V
Battery
Micro
USB
Micro
USB
Battery Manager
Current Sensors
3.3V
5V
User LED
Figure 2 Block diagram – Radar Baseboard XMC4700
2.3 Power supply
The Radar Baseboard XMC4700 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 page 8 of 26 V2.0
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Radar Baseboard XMC4700
24 GHz radar system platform
Hardware description: Radar Baseboard XMC4700
Base board
XMC4700
LDO
VCC1
R
shunt
7V
External Power Supply
5Vinput
5V
Battery
Battery Manager
Current Sensors
3.3V
LDO
3.3V
5Vdebug
Micro
USB
XMC4200
(Debugger)
LDO
5Vinput
RF Shield
Micro
USB
Debug (X6)
Default (X5)
Figure 3 Block diagram – power supply concept
2.3.1 Battery and external power supply
The Radar Baseboard XMC4700 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.
2.3.1.1 Hardware changes (for V1.1 only)
To start up the XMC4700 with external 7 V power supply or battery, it is important to first carry out these steps:
• Configure the P8 header as shown in Figure 4 (1, 2 connected and 5, 6 connected).
• Remove the P9 header to release the XMC4700 from RESET.
1
2
TCK
TMS
0 1
12
Main XMC4700 Normal Boot
Figure 4 P8 header configuration for using battery or external power supply
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