Texas Instruments XWRL1432BOOST Manual de usuario

EVM User's Guide: XWRL1432BOOST

Low Power 77 GHz mm-Wave Sensor

Description

The xWRL1432BOOST from Texas Instruments is

an easy-to-use evaluation board for the xWRL1432

mmWave sensing device, with standalone operation

and direct connectivity to the DCA1000EVM for raw

ADC capture and signal processing development.

This EVM contains everything required to start

developing software for on-chip Hardware accelerator

and low power ARM® Cortex® - M4F controllers.

Get Started

1. Visit xWRL1432BOOST EVM product page.

Automotive - AWRL1432BOOST.

Industrial - IWRL1432BOOST.

2. Configure the SOP Switches (S1 and S4), for

functional mode(SOP4).

3. Visit TI Developer Zone for essential software like

SDK and Radar Toolbox.

Automotive - AWRL1432BOOST.

Industrial - IWRL1432BOOST.

4. Navigate to the Radar Toolbox.

5. The user’s guide is located here:

Radar Toolbox\Example Projects\Out of Box

Demo\xWRL1432 Out of Box Demo\.

6. Further explore the Radar Toolbox for more

information, applications, and resources.

Features

• High RF Performance RO4835LoPro PCB

substrate

• Wide field of view antenna, targeted for wall mount

applications

• XDS110 JTAG interface with USB connectivity for

code development and debugging

• Power optimized discrete DCDC power

management

• Serial port for onboard QSPI flash programming

• 60-pin, high-density (HD) connectors for raw

analog-to-digital converter (ADC) data

• Onboard CAN-FD transceiver

• Onboard LIN PHY transceiver for automotive

variant.

• USB powered standalone mode of operation

• EVM is designed as booster pack to connect with

other LaunchPad EVMs

• On board 16Mbit QSPI flash

XWRL1432BOOST EVM

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Low Power 77 GHz mm-Wave Sensor 1

1 Evaluation Module Overview

1.1 Introduction

The xWRL1432 mmWave Sensor device is an integrated single chip mmWave sensor based on FMCW

radar technology. The device is capable of operation in the 76-GHz to 81-GHz band. The xWRL1432 is

designed for low power, self-monitored, ultra-accurate radar systems in the Automotive and Industrial space

of applications. The xWRL1432BOOST EVM enables access to point-cloud data and power over USB interface.

The xWRL1432BOOST supports direct connectivity to the DCA1000EVM development kit. This kit is supported

by mmWave tools, demos and software including mmWave software development kit (MMWAVE-L-SDK) and

TI's Code Composer Studio. Additional boards can be used to enable additional functionality. For example,

DCA1000EVM enables access to the raw ADC data capture of a sensor. On board XDS110 enables software

development through TI’s CCS. xWRL1432BOOST can interface with the MCU LaunchPad™ development kit

ecosystem.

1.2 Kit Contents

xWRL1432BOOST includes the following:

• xWRL1432BOOST Evaluation board

• Micro USB cable

• Quick Start Guide

1.3 Specification

40 m



INA228

TEMP SENS

TMP112A

40 m



INA228

QSPI flash

40 m



INA228 EEPROM

CAT24C08

XWRL6432

XWRL1432

Optional power jack

SOP0, SOP1

SPI

RESET

MISC

VOUT_PLL

VBGAP

XTAL

40 MHz

5V_IN

Max 5.5 V

I2C

USB TO UART

XDS110

On board

JTAG

RS232TX/RX

SOP

Switch

DCA1000

60 PIN CONNECTOR

Reset

button

CMOS to LVDS

converter

2X SN65LVDS31M (4

channel)

CAN FD interface

TCAN1042HGVDQ1

USB to

SPI/I2C

Header

FR4/Rogers

VPP

VOUT_14Synth

LVDS

VOUT_PA

3.3 V

1.8 V

1.2V

DCDC converter

TPS6285021HQD

RLRQ1

DCDC converter

TPS6285020MQ

DRLRQ1

DCDC converter

TPS628502QDRL

RQ1

LP/BP connector

6 ch CMOS I/Os

I2C

LIN PHY interface

TLIN1039DDFRQ1

Load switch

TPS2116DRLR

UART

PMIC_CLK_OUT, TDO

NRST

VDDA_10RF

INA228

RF supply

Digital supply

20 m



SPI

Header

Figure 1-1. Functional Block Diagram

Figure 1-1 shows the functional block diagram. The EVM contains the essential components for the TI mm-

Wave radar system: DCDC, SFLASH, SOP configuration, Filter, TI mmWave Radar chip, a USB to UART

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converter, and a 60-pin Samtec connector for interfacing with the DCA1000. The board also hosts a booster

pack connector which can be connected to TI’s LaunchPad boards.

1.4 Device Information

The documents in Table 1-1 provide information regarding Texas Instruments integrated circuits used in the

assembly of the xWRL1432BOOST EVM. This user's guide is available from the TI web site under literature

number SWRU613. Any letter appended to the literature number corresponds to the document revision that is

current at the time of the writing of this document.

Table 1-1. Related Device Documentation

Devices Used on the EVM Data Sheet

TMP112-Q1 TMP112AQDRLRQ1

TS3A5018 TS3A5018RSVR

TCAN1042HGV-Q1 TCAN1042HGVDQ1

INA228A INA228AIDGST

TPD4E004D TPD4E004DRYR

SN65LVDS31MD SN65LVDS31MDREP

TS3A44159 TS3A44159PWR

TPS79601D TPS79601DRBR

TS3A27518E TS3A27518EPWR

TPS2116D TPS2116DRLR

SN74LVC1G11D SN74LVC1G11DSFR

TPS628502-Q1 TPS6285021HQDRLRQ1

TPS6285020-Q1 TPS6285020MQDRLRQ1

LM4040C25Q LM4040C25QDBZR

TLIN1039-Q1 TLIN1039DDFRQ1

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Low Power 77 GHz mm-Wave Sensor 3

2 Hardware

CAUTION

Hot surface.

Contact can cause burns

Do not touch.

The XWRL1432BOOST includes three receivers and two transmitters with a wide field of view hosted on a High

RF Performance RO4835LoPRO PCB substrate.

Figure 2-1. XWRL1432BOOST (Top View)

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Figure 2-2. XWRL1432BOOST (Bottom View)

Figure 2-3. Salient Features of EVM (Top Side)

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Low Power 77 GHz mm-Wave Sensor 5

Figure 2-4. Salient Features of EVM (Bottom Side)

2.1 XWRL1432BOOST Antenna

The XWRL1432BOOST includes three receivers and two transmitters FR4 based antennas on the PCB. Figure

2-5 shows the antenna configuration.

Figure 2-5. TX and Rx Antennas of the EVM

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Note

The XWRL1432BOOST has an antenna gain of approximately 5-6 dBi across different antenna pairs.

2.1.1 PCB Material

Material used for this PCB is Rogers RO4835LoPro of 4mil thickness with rolled copper for the Antenna and

transmission lines and 370HR is used for the rest of the layers.

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Low Power 77 GHz mm-Wave Sensor 7

2.1.1.1 Transmitter and Receiver Virtual Array

Transmitter and receiver antennas positions in Figure 2-6 form a virtual array of six transmitter and receiver

pairs. This allows object detections finer azimuthal angular resolution (29°) and coarse elevation angular

resolution (58°). Receiver antennas are spaced at distance D (Lambda/2) and Transmitter antenna Tx1 and

Tx2 spaced at 2D (lambda) in azimuthal plane and D (Lambda/2) in elevation plane. Tx1 and Tx2 are placed at

D (lambda/2) in the elevation and 2D (Lambda) in azimuth plane.

Figure 2-6. Virtual Antenna Array

Figure 2-6 shows the antenna radiation pattern with regard to azimuth and Figure 2-7 shows the antenna

radiation pattern with regard to elevation for TX1 and TX2. Both figures show the radiation pattern for TX1

and TX2 and RX1, RX2 and RX3 together. All of the measurements were done with a Tx and Rx combination

together. Thus, for the -6dB beam width, the user must see a -12db (Tx (-6dB) + Rx(-6dB)) number from the

boresight.

Note

Wavelength (Lambda) is computed based on a frequency of 78.5 GHz. Antenna placements are

according to this frequency.

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Figure 2-7. xWRL1432BOOST EVM Azimuth Antenna Radiation Patterns

Measured azimuthal radiation pattern for all Tx to Rx pairs (Corner reflector placed at approximately 5 meters

with a 4- GHz bandwidth chirp starting at 76 GHz)

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Low Power 77 GHz mm-Wave Sensor 9

Figure 2-8. xWRL1432BOOST EVM Elevation Antenna Radiation Patterns

Measured elevation radiation pattern for all TX to RX pairs (Corner reflector placed at approximately 5 meters

with a 4-GHz bandwidth chirp starting at 76 GHz)

Note

In accordance to the EN 62311 RF exposure test, a minimum separation distance of 20 centimeters

must be maintained between the user and the EVM during operation.

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