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UG091519
Radar Baseboard MCU7
XENSIV™ radar system platform
Board version V3.1
About this document
Scope and purpose
This user guide describes the Radar Baseboard MCU7 (DEMO RADAR MCU7), part of Infineon's XENSIV™ 60 GHz
radar system platform. It also introduces the concept of the platform, which supports multiple sensors. At the
heart of the board is the Microchip ATSAMS70Q21, a 32-bit Arm® Cortex®-M7 microcontroller unit (MCU). The
microcontroller enables interfacing up to two sensors. It also provides a Hi-Speed USB 2.0 interface to a host
computer for visualization or fast data processing. In addition, the board is compatible with the Arduino MKR
standard, which facilitates access to existing mass-market daughter boards for mass data storage or wireless
communication Arduino boards.
Intended audience
The intended audience for this document are design engineers, technicians, and developers of electronic
systems, working with Infineon's XENSIV™ 60 GHz radar sensors.
User guide
Please read the sections "Important notice" and "Warnings" at the end of this document
Revision 2.70
www.infineon.com
2023-02-14
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Summary of Contents for Infineon XENSIV Radar Baseboard MCU7
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Page 1: About This Document
About this document Scope and purpose This user guide describes the Radar Baseboard MCU7 (DEMO RADAR MCU7), part of Infineon’s XENSIV™ 60 GHz radar system platform. It also introduces the concept of the platform, which supports multiple sensors. At the heart of the board is the Microchip ATSAMS70Q21, a 32-bit Arm®... -
Page 2: Table Of Contents
Radar Baseboard MCU7 XENSIV™ radar system platform Table of contents Table of contents About this document ........................1 Table of contents ..........................2 Introduction ......................... 3 Radar system platform ..........................3 Key features .............................3 Sensor interface ........................5 Overview ..............................5 Supply .............................. -
Page 3: Introduction
Introduction Radar system platform The 60 GHz radar system platform is the evaluation platform for Infineon’s 60 GHz radar sensors. It consists of the Radar Baseboard MCU7 as the microcontroller board and a 60 GHz radar sensor board, e.g., BGT60TR13C shield, BGT60LTR11AIP shield, etc. - Page 4 Radar Baseboard MCU7 XENSIV™ radar system platform 1 Introduction perform radar data processing or forward the sensor data to a USB interface or an Arduino MKR interface. The board’s block diagram is depicted in Figure 3 and its key features are as follows: Arm®...
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Page 5: Sensor Interface
Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface Sensor interface This section covers the sensor interface that was introduced in the previous section. Overview Enable 3.3V sensor 3.3V 1.8V 1.5V 1.8V sensor 1.5V sensor LS,supply GPIO GPIO Open drain I²C 3.3V digital... -
Page 6: Supply
Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface One DAC channel • Six open-drain output signals. One of these is intended to control an LED on the sensor board. The MCU will • activate the LED by pulling the signal to a low level and deactivate the LED by putting the signal into High-Z mode. -
Page 7: Level Shifters
Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface If ghost targets appear in the radar signal, it may be possible to improve the performance by optimizing the power supply. On the Radar Baseboard MCU7, the supply of the 1.8 V and 1.5 V LDOs can be changed from 3.3 V to 5 V by swapping L44 with L45 and L46 with L47. -
Page 8: Sensor Connectors
Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface daughter card has the option to choose its preferred supply voltage. To minimize interference from digital signals on the supply voltage, the level shifters are decoupled from the sensor supplies. This is done by using ferrite beads with high suppression in the MHz regime. - Page 9 Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface OpenDrain_LED_1 3V3digital I2C_SDA_1 DAC_1 I2C_SCL_1 BGT_IRQ_1 ADC2_1 ADC1_1 SPI_CLK_1 GPIO2_1 SPI_MOSI_1 1V5Sensor1 SPI_MISO_1 Vdigital_1 0.1R 1% OpenDrain4_1 GPIO1_1 1V8Sensor1 BGT_RST_1 OpenDrain3_1 0.1R 1% SPI_CSN_1 OpenDrain1_1 OpenDrain2_1 3V3Sensor1 3V3digital 0.1R 1% DF40C-20DS-0.4V(51) DF40C-20DS-0.4V(51) 3V3Sensor1...
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Page 10: Current Measurement Of Radar Sensor Boards
Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface Current measurement of radar sensor boards Top side Bottom side Figure 10 Shunt resistors for current measurement of the radar sensor boards If a measurement of the actual operating current consumption of the sensor is required, shunt resistors are provided on the Radar Baseboard MCU7. - Page 11 Radar Baseboard MCU7 XENSIV™ radar system platform 2 Sensor interface current (and thus power) for all states of a radar frame. The next computation step is to calculate the energy consumed in each state by multiplying the power with the duration. Then, one must add up all energies of a frame up to obtain the energy of the whole frame.
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Page 12: Arduino Mkr Interface
Radar Baseboard MCU7 XENSIV™ radar system platform 3 Arduino MKR interface Arduino MKR interface The Arduino MKR family is a new Arduino family of boards with a standardized interface that can be used for rapid prototyping. This new board family contains (among others) the following boards, which can be used as daughter cards: MKR Zero –... -
Page 13: Firmware
Radar Baseboard MCU7 XENSIV™ radar system platform 4 Firmware Firmware Overview The Radar Baseboard MCU7 comes with a default firmware that is intended to serve as a bridge between a host (typically a PC) and the sensor shields, which are mounted on the sensor connectors. For this, the firmware implements logic to: communicate with the host via USB. -
Page 14: Usb
Radar Baseboard MCU7 XENSIV™ radar system platform 4 Firmware The Radar Baseboard MCU7’s firmware code will not be used; however, the initialization code should be • moved into the MCU of the project. When porting the whole firmware to a different MCU, it should be sufficient to port the HAL to that MCU. When adding an algorithm to the firmware, this should be put above the driver layer. -
Page 15: Rgb Led
Radar Baseboard MCU7 XENSIV™ radar system platform 4 Firmware Structure Field Description Entry N: Page Address of the data for the Nth entry specified as a page number Data area The rest of the EEPROM is used to store the data corresponding to the entries in the directory Data 1 Data for entry 1 at the page given in the corresponding directory entry... -
Page 16: Firmware Development And Debugging
Radar Baseboard MCU7 XENSIV™ radar system platform 4 Firmware Firmware development and debugging The firmware is delivered as a project for the Atmel Studio 7 IDE. Hence,c ompiling, flashing and debugging work out of the box by simply pressing the corresponding buttons in the IDE. For further details, refer to (Microchip, Atmel Studio 7 User Guide, 2019). -
Page 17: Microcontroller Pin Map
Radar Baseboard MCU7 XENSIV™ radar system platform 5 Microcontroller pin map Microcontroller pin map Sensor interface 1 Table 5 Microcontroller pin map of sensor interface 1 Signal name(s) Signal group MCU pin Description I2C_SCL_1 PD28 Clock pin of I C interface for the EEPROM I2C_SDA_1 PD27 Data pin of I... -
Page 18: Sensor Interface 2
Radar Baseboard MCU7 XENSIV™ radar system platform 5 Microcontroller pin map Signal name(s) Signal group MCU pin Description S1_GPIO_OE Level shifter PD14 Enable pin of the level shifter for GPIO 1 and GPIO2 – with external pull-up resistor (high: disable, low: enable) S1_GPIO_DIR Level shifter PD18... -
Page 19: Arduino Mkr Interface
Radar Baseboard MCU7 XENSIV™ radar system platform 5 Microcontroller pin map Signal name(s) Signal group MCU pin Description S2_SPI_OE Level shifter Disable pin of the level shifter for SPI communication – with external pull-down resistor (high: disable, low: enable) S2_SPI_DIR Level shifter Direction pin of the level shifter for SPI communication –... -
Page 20: Other Pins
Radar Baseboard MCU7 XENSIV™ radar system platform 5 Microcontroller pin map Connector Signal name MCU pin Description P3.6 GPIO, ADC channel 4, analog front end 0 of the MCU P3.7 GPIO, ADC channel 5, analog front end 0 of the MCU P3.8 PA21 GPIO, ADC channel 6, analog front end 0 of the MCU... -
Page 21: References
Radar Baseboard MCU7 XENSIV™ radar system platform References References Microchip. (2018, 05). Atmel Studio 7 User Guide. https://www.microchip.com/content/dam/mchp/documents/atmel-start/Atmel-Studio-7-User- Guide.pdf Microchip. (2020, 12 20). SAM-BA Boot Assistant. https://www.microchip.com/en-us/development- tool/SAM-BA-In-system-Programmer User guide Revision 2.70 2023-02-14... -
Page 22: Revision History
Radar Baseboard MCU7 XENSIV™ radar system platform Revision history Revision history Document Date Description of changes revision 1.00 2019-04-01 Initial version 2.00 2019-05-29 Changed LDOs NCP177 to NCP163 Added signal from sensor interface to level shifter supply 2.10 2019-10-21 Changed connectors in Figure 9 Modified Figure 11... -
Page 23: Disclaimer
Technologies in a written document signed by 81726 Munich, Germany authorized representatives of Infineon Technologies, Infineon Technologies’ products may not be used in any applications where a failure of the product or any © 2023 Infineon Technologies AG. consequences of the use thereof can reasonably be expected to result in personal injury.
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