Texas Instruments AWR2944 User manual

User’s Guide
AWR2944 Evaluation Module
Table of Contents
1 Getting Started........................................................................................................................................................................2
1.1 Introduction........................................................................................................................................................................ 2
1.2 Key Features .....................................................................................................................................................................2
1.3 What’s Included..................................................................................................................................................................2
2 Hardware................................................................................................................................................................................. 3
2.1 Block Diagram....................................................................................................................................................................5
2.2 PCB Handling Recommendations......................................................................................................................................5
2.3 Power Connections............................................................................................................................................................ 6
2.4 Connectors.........................................................................................................................................................................6
2.5 Antenna............................................................................................................................................................................15
2.6 PMIC................................................................................................................................................................................ 17
2.7 On-Board Sensors........................................................................................................................................................... 17
2.8 PC Connection................................................................................................................................................................. 18
2.9 Connecting the AWR2944EVM to the DCA1000 EVM.....................................................................................................20
2.10 Jumpers, Switches, and LEDs....................................................................................................................................... 21
3 Design Files and Software Tools.........................................................................................................................................26
3.1 Design Files..................................................................................................................................................................... 26
3.2 Software, Development Tools, and Example Code..........................................................................................................26
4 Revision History................................................................................................................................................................... 27
Trademarks
ARM® and Cortex® are registered trademarks of Arm Limited.
Windows® is a registered trademark of Microsoft.
All trademarks are the property of their respective owners.
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1 Getting Started
1.1 Introduction
The AWR2944EVM is an easy-to-use evaluation board for the AWR294x mmWave sensing device, with direct
connectivity to the DCA1000 EVM.This EVM kit contains everything needed to start developing software for
the on-chip C66x DSP, ARM® Cortex®-R5F controller, and hardware accelerator (HWA 2.0). Also included is
on-board emulation for programming and debugging as well as on-board buttons and LEDs for quick integration
of a simple user interface.
1.2 Key Features
• On-board antenna
• XDS110 based JTAG emulation with Serial port for onboard 64-bit QSPI flash programming
• UART to USB Debug port for terminal access using FT4232H
• 60-pin, high-density (HD) connector for external JTAG/ Emulator Interface with TRACE and CSI2 support
• 60-pin, high-density (HD) connector for debug, SPI, I2C and LVDS
• RJ45 connector to stream the captured data over the network to the host PC
• MATEnet Ethernet interface to stream the captured data over the network to an automotive host
• Dual On-board CAN-FD transceiver
• One button and LED for basic user interface
• 12 V power jack to power the board
1.3 What’s Included
1.3.1 Kit Contents
• AWR2944EVM
• Micro USB cable
• Ethernet Cable
• Mounting brackets, screws, spacers and nuts, to allow placing the PCB vertical
Note
A 12V, > 2.5-A supply brick with a 2.1-mm barrel jack (center positive) is not included. TI recommends
using an external power supply that complies with applicable regional safety standards, such as UL,
CSA, VDE, CCC, PSE, and more. The length of the power cable should be < 3 m.
The following power supply has been tested to work with the AWR2944EVM: SDI65-12-U-P5.
1.3.2 mmWave Out-of-Box (OOB) Demo
TI provides sample demo codes to easily get started with the AWR2944 evaluation module (EVM) and to
experience the functionality of the AWR2944 radar sensor. For details on getting started with these demos, see
www.ti.com/tool/mmwave-sdk.
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2 Hardware
Note
During operation, a minimum separation distance of 5 centimeters must be maintained between the
user and the EVM.
Figure 2-1. AWR2944EVM Front View
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Figure 2-2. AWR2944EVM Back View
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2.1 Block Diagram
3.3 V
AWR294x
TCAN1043
CAN FD1 PHY
TCAN1042
CAN FD2 PHY
MIPI 60-pin
Connector
Debug 60-pin
Connector
CAN
Interface 1
CAN
Interface 2
DP83867E
Ethernet PHY
RJ45 Ethernet
Jack
TPS73501
2.5 V LDO
TLV733
1 V LDO
PJ-063AH
DC Jack
LP877451-Q1
INA226
Current
Sensor INA226
Current
Sensor
12 V
1.8 V
3.3 V
1.8 V 1.2 V
3.3 V
1.8V
CAN FD1
CAN FD2
1.8 V 3.3 V
1 V 2.5 V
RGMII, MDIO
GD25B64CWG
FLASH
QSPI
3.3 VIO
TM4C1294NCPDT
XDS110
USB
RS232,
MSS/BSS Logger,
JTAG
3.3 V
FT4232H
FTDI
USB
SPI
I2C
RS232
UART
NERRIN
NRST
WRMRST
SOP
TMP112
Temp Sensor
I2C
40 MHz
XTAL
External CLK
option
5 V BOOST
5 V BOOST
3.3 VIO
3.3 VIO
TRACE, CSI2, JTAG
GPADC
SPI
I2C
WRMRST
NERRIN
NERROUT
EPWMs
GPIOs
LVDS
INA226
Current
Sensor
1.2 V
3.3 V
VPP SUPPLY
INA226
Current
Sensor
1.0 V
3.3 V
1.0 V
LM63635-Q1
3.3 VIO 12 V
DP83867E
Ethernet PHY MATEnet
3.3 VIO 3.3 V 1 V
TPS73501
2.5V LDO
12 V
VSLEEP
5 V BOOST
TPS79601
1.7V LDO
Figure 2-3. AWR2944EVM Block Diagram
2.2 PCB Handling Recommendations
This EVM contains components that can potentially be damaged by electrostatic discharge. Always transport
and store the EVM in the supplied ESD bag when not in use. Handle using an antistatic wristband. Operate on
an antistatic work surface. For more information on proper handling, refer to SSYA010A.
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2.3 Power Connections
The AWR2944EVM is powered by the 12-V power jack (>2.5-A current capability). When power is provided the
AR_NRST, VBAT_INT, and 5V0 LEDs glow, indicating that the board is powered up.
Figure 2-4. 12-V Power Connector
Note
After the 12-V power supply is provided to the EVM, TI recommends to press the NRST switch (SW1)
one time to provide for a reliable boot-up state.
2.4 Connectors
2.4.1 MIPI 60-Pin Connector (J19)
This connector provides the standard MIPI 60-pin interface, as shown in Figure 5, for JTAG, CSI2 and trace
capability through emulators such as the XDS560pro. Further information on the emulation and trace header can
be found in the Emulation and Trace Headers Technical Reference Manual.This connector also provides access
to the CSI_RX lanes which allow for playback or feeding external data and bypassing the RF front end, which
enables testing and algorithm development on a known dataset.
To use this interface, the JTAG lines from the AWR2944EVM needs to be muxed to MIPI 60-pin connector. Refer
to Section 2.8.1 for more details.
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Figure 2-5. 60-pin MIPI Connector
Table 2-1 provides the pin assignment details for the MIPI 60-pin connector.
Table 2-1. J19 Pin Assignment
Pin Number Description Pin Number Description
1 MIPI_VREF_DEBUG 2 MIPI_TMS
3 MIPI_TCK 4 MIPI_TDO
5 MIPI_TDI 6 MIPI_NRST
7 MIPI_RTCK 8 MIPI_TRSTPD
9 MIPI_JTAG_NRST 10 NC
11 NC 12 MIPI_VREF_DEBUG
13 TRACE_CLK 14 NC
15 MIPI_DBG_DETECT 16 GND
17 TRACE_CTL 18 NC
19 TRACE_DATA0 20 NC
21 TRACE_DATA1 22 NC
23 TRACE_DATA2 24 NC
25 TRACE_DATA3 26 NC
27 TRACE_DATA4 28 NC
29 TRACE_DATA5 30 NC
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Table 2-1. J19 Pin Assignment (continued)
Pin Number Description Pin Number Description
31 TRACE_DATA6 32 NC
33 TRACE_DATA7 34 NC
35 NC 36 NC
37 NC 38 NC
39 NC 40 NC
41 NC 42 GND
43 NC 44 CSI2_CLK_P
45 NC 46 CSI2_CLK_N
47 NC 48 GND
49 NC 50 CSI2_1_P
51 NC 52 CSI2_1_N
53 NC 54 GND
55 NC 56 CSI2_0_P
57 GND 58 CSI2_0_N
59 NC 60 GND
2.4.2 Debug Connector-60 pin (J7)
This connector enables interfacing of LVDS signals to the DCA1000 EVM for data capturing purposes.
Also, the connector has SPI, I2C, JTAG, GPADC, WRMRST, NRROUT, EPWM, and other control signals from
AWR2944EVM for debug purpose.
The SPI is multiplexed to the Debug Connector. For more details refer to Section 2.8.1.
Figure 2-6. 60-pin Debug Connector
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Table 2-2 provides the pin assignment details for the Debug 60-pin connector.
Table 2-2. J7 Pin Assignment
Pin Number Description Pin Number Description
1 NC 2 NC
3 NC 4 XREF_CLK0
5 GND 6 MSS_EPWMA0
7 DBG_SPI_CS0 8 GND
9 DBG_SPI_CLK 10 MSS_SPIA_HOSTIRQ
11 DBG_SPI_PICO 12 DBG_SPI_POCI
13 3.3V PULL_UP 14 XREF_CLK1
15 EMU_TCK 16 MCU_CLKOUT
17 EMU_TDI 18 GND
19 GPADC1 20 EMU_TMS
21 GPADC2 22 EMU_TDO
23 GPADC3 24 GND
25 GPADC4 26 LVDS_TX3_FRCLK_P
27 GPADC5 28 LVDS_TX3_FRCLK_N
29 GPADC6 30 GND
31 GPADC7 32 NC
33 GPADC8 34 NC
35 GPADC9 36 GND
37 MSS_SPIB_CS1 38 NC
39 SOP1_MSS_SPIB_CS2 40 NC
41 MSS_GPIO_0 42 GND
43 MSS_GPIO_1 44 LVDS_TX2_CLK_P
45 AR_WRMRST 46 LVDS_TX2_CLK_N
47 NC 48 GND
49 AR_NERROUT 50 LVDS_TX1_P
51 MSS_I2CA_SCL 52 LVDS_TX1_N
53 MSS_I2CA_SDA 54
55 MSS_EPWMB0 56 LVDS_TX0_P
57 MSS_EPWMA1 58 LVDS_TX0_N
59 MSS_GPIO_3 60 GND
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2.4.3 CAN-A Interface Connector (J3)
The J3 connector provides the CANA_L and CANA_H signals from the onboard can CAN-FD transceiver
(TCAN1042HGVDRQ1). These can be directly wired to the CAN bus.
Figure 2-7. CAN_A Connector
Table 2-3 provides the pin assignment details for the CAN_A connector.
Table 2-3. J3 Pin Assignment
Pin Number Description
1 CAN_L
2 GND
3 CAN_H
2.4.4 CAN-B Interface Connector (J2)
The J2 connector provides the CANB_L and CANB_H signals from the onboard can CAN-FD transceiver
(TCAN1043ADYYRQ1). These can be directly wired to the CAN bus.
Figure 2-8. CAN_B Connector
Table 2-4 provides the pin assignment details for the CAN_B connector connector.
Table 2-4. J2 Pin Assignment
Pin Number Description
1 CAN_L
2 GND
3 CAN_H
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2.4.5 Ethernet Ports (J4 and J9)
The AWR2944EVM supports two RGMII Ethernet ports to provide the connection to the network. The J4
connector provides access over a MATEnet port (9-2304372-9 connector) via a DP83TC812R-Q1 PHY. The
J9 port provides access over an RJ45 port via a DP83867ERGZR PHY. By default, the RGMII interfaces are
connected to the J9 port only. To access the RGMII interface, over the J4 connector several resistors must be
populated. For more details please see Section 2.4.5.1 and refer to the Schematic, BOM, and Assembly and
Database and Layout sections.
This RGMII interface is intended to operate primarily as a 100Mbps ECU interface and can also be used as an
Instrumentation Interface.
The RGMII interface supports following features:
• Full Duplex 10Mbps/100Mbps wire rate Interface to Ethernet PHY over RGMII, parallel interface
• MDIO Clause 22 and 45 PHY management interface
• IEEE 1588 Synchronous Ethernet support
The Ethernet port is interfaced to the AWR2944 through the Ethernet PHY and is used to stream the captured
data over the network to the host PC.
Figure 2-9 shows the Ethernet RJ45 Mag-Jack connector, and Table 2-5 provides the connector pin details.
Table 2-5. J9 Pin Assignment
Pin Number Description Pin Number Description
1 GND 2 Test point
3 ETH_D4P 4 ETH_D4N
5 ETH_D3P 6 ETH_D3N
7 ETH_D2P 8 ETH_D2N
9 ETH_D1P 10 ETH_D1N
11 LED_ACTn 12 GND
13 GND 14 LED_LINKn
15 ETH_GND 16 ETH_GND
Figure 2-9. RJ45 Connector
Figure 2-10 shows the Ethernet MATEnet connector, and Table 2-6 provides the connector pin details.
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Table 2-6. J4 Pin Assignment
Pin Number Description Pin Number Description
1 TRD_P 2 TRD_M
S1 GND S2 GND
S3 GND S4 GND
S5 GND S6 GND
Figure 2-10. MATEnet Connector
2.4.5.1 ECOs to Enable the DP83TC812R PHY
By default, the board is designed to be used with the DP83867E PHY with the RJ45 connector. To enable the
DP83TC812R PHY with the MATEnet connector, the following hardware changes must be made. For help with
locating these components on the PCB, refer to the provided Schematic, BOM, and assembly files.
1. Remove R98 and populate on R74
2. Remove R101 and populate on R230
3. Remove R103 and populate on R96
4. Remove R105 and populate on R100
5. Remove R121 and populate on R178
6. Remove R122 and populate on R225
7. Remove R195 and populate on R245
8. Remove R290 and populate on R234
9. Remove R325 and populate on R237
10. Remove R336 and populate on R238
11. Remove R338 and populate on R239
12. Remove R339 and populate on R240
13. Remove R413 and populate on R247
14. Remove R369 and populate on R249
15. Populate D18 and D19 ESD diodes
16. Populate C55
17. The bootstrap configuration pins can be populated/removed as needed depending on the use case
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2.4.6 USB Connectors (J8, J10)
Note
The EVM must be powered on before the USB cables are connected. Plugging in the USB cables
before powering on the board can cause the board to get stuck in a permanent reset state. In the
event that this occurs, just unplug the USB cables, power cycle the EVM, and plug in the USB cables
to resolve the issue.
The AWR2944EVM has two standard micro USB connectors.
Micro USB Connector J10 provides access to the AWR2944 UART, SPI, I2C, RS232, and SOP interfaces
through the FTDI chip.
Table 2-7. J10 Pin Assignment
Pin Number Description Pin Number Description
1 FTDI_VBUS 2 FTDI_USBD_N
3 FTDI_USBD_P 4 FTDI_USBID
5 GND 6 GND
7 GND 8 GND
9 GND 10 GND
11 GND
Figure 2-11. FTDI USB Port
Micro USB connector J8 provides access to the JTAG, MSS_UARTA, and MSS_UARTB interfaces of the
AWR2944 via the XDS110 emulator.
This is the UART interface used to flash the binary to the onboard serial flash and for Out-of-box (OOB) demo.
Note
The OOB demo requires only J8 to be connected to the PC. J10 is not used for the OOB demo.
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Table 2-8. J8 Pin Assignment
Pin Number Description Pin Number Description
1 XDSET_VBUS 2 XDSET_D_N
3 XDSET_D_P 4 XDSET_ID
5 GND 6 GND
7 NC 8 NC
9 GND 10 GND
11 GND
Figure 2-12. XDS USB Port
2.4.7 OSC_CLKOUT Connector (J14)
Connector J14 provides access to measure oscillator clock out signal from the AWR2944 device.
Figure 2-13. OSC Clock Port
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2.4.8 PMIC SPI Connector (J16) (DNP)
Connector J16 provides access to the SPI and enable pins on the PMIC (U8). This part is not populated by
default. To populate this connector with the appropriate part, please refer to the Schematic, BOM, and assembly
files.
Table 2-9. J8 Pin Assignment
Pin Number Description Pin Number Description
1 PMIC SPI_CS 2 PMIC SPI_PICO
3 PMIC SPI_CLK 4 NC
5 PMIC SPI_POCI 6 PMIC ENABLE
2.4.9 Voltage Rails Ripple Measurement Connectors (J1, J5) (DNP)
J1 Provides access to measure ripple on 1V0_FILTERED (1.0 analog RF supply for AWR2944) voltage rail.
J5 Provides access to measure ripple on 1V8_FILTERED (1.8-V analog supply for AWR2944) voltage rail.
These connectors are not populated on the board by default. To populate these connectors with the appropriate
part, please refer to the Schematic, BOM, and assembly files.
2.5 Antenna
The AWR2944EVM includes onboard etched antennas for the four receivers and four transmitters, which
enables tracking multiple objects with their distance and angle information. This antenna design enables
estimation of both azimuth and elevation angles, which enable object detection in a 3-D plane (see Figure
2-14).
Figure 2-14. AWR2944EVM Antenna Design
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The antenna placement shown in Figure 2-14 results in the virtual antenna array shown in Figure 2-15.
/2
0.8 
/2
Figure 2-15. Virtual Antenna Array
The antenna peak gain is 13 dBi across the frequency band of 76 to 81 GHz. The radiation pattern of the
antenna in the horizontal plan (H-plane) and elevation plan (E-plane) is as shown in Figure 2-16 and Figure
2-17, respectively.
The beamwidth of the antenna design can be determined from the radiation patterns provided below. For
example, based on 3-dB drop in the gain as compared to bore sight, the horizontal 3dB-beamwidth is
approximately ±30 degrees (see Figure 2-16), and elevation 3dB-beamwidth is approximately ±3 degrees (see
Figure 2-17). Similarly, the horizontal 6 dB beamwidth is approximately ±45 degrees (see Figure 2-16) and the
elevation 6dB-beamwidth is approximately ±5 degrees (see Figure 2-17).
Figure 2-16. Azimuth Radiation Pattern
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Figure 2-17. Elevation Radiation Pattern
2.6 PMIC
Power to the AWR2944 is provided by the LP877451-Q1 PMIC. This is a functional safety compliant PMIC that
supports ASIL-C/SIL-2 applications. For more details, visit the LP87745-Q1 product page (https://www.ti.com/
product/LP87745-Q1).
2.7 On-Board Sensors
The AWR2944EVM provides access to an on-board temperature sensor (TMP112AIDRLR) and four on-board
current sensors (INA226AIDGSR). These sensors can be controlled by the radar via I2C. For details about the
I2C addresses of these sensors, refer to Section 2.10.3.
The current sensors are designed to measure the current being supplied to the various power rails of the
AWR2944 device. For details on the supply nodes that can be measured using the current sensors, refer to
Table 2-10.
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Table 2-10. Current Sensor Supply Details
Reference Designator Supply Node PCB Net Name
U9 AWR 1.2-V Supply 1V2
U11 AWR 1.8-V Supply 1V8
U12 AWR 3.3-V Supply 3V3
U22 AWR 1.0-V Supply 1V0
2.8 PC Connection
The PC connectivity is provided via two micro USB connectors, J8 and J10.
2.8.1 XDS110 Interface
J8 provides access to the onboard XDS110 (TM4C1294NCPDT) emulator. This connection provides the
following interfaces to the PC:
• JTAG for CCS connectivity
• MSS logger UART (can be used to get MSS code logs on the PC)
When the J8 USB is connected to the PC the device manager should recognize two XDS110 COM ports under
Ports (COM & LPT).
Figure 2-18. XDS110 COM Ports
XDS110 debug probe and data port are detected under Texas Instruments Debug Probes.
Figure 2-19. TI Debug Probes
If the PC is unable to recognize the above COM ports, install the latest EMUpack.
2.8.2 FTDI Interface
J10 provides access to the onboard FTDI ports. This provides the following interfaces to the PC:
• FTDI Port A -> MSS_SPIA interface
• FTDI Port B-> MSS_I2C interface; Host INTR signal.
• FTDI Port C -> BSS_UART port; DSS_UART port (not populated by default); NRESET and WARMRST
control signals.
• FTDI Port D -> MSS_RS232 port; SOP0, SOP1, and SOP2 control signals
When the USB is connected for the first time to the PC, Windows® maybe not be able to recognize the device.
This is indicated in the device manager with yellow exclamation marks, as shown in Figure 2-20.
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Figure 2-20. Uninstalled FTDI Drivers
To install the devices, download the latest FTDI drivers available in the mmwave SDK package. Right click
on these devices, and update the drivers by pointing to the location where the FTDI drivers were installed
(C:\ti\mmwave_sdk_<version_number>\tools\ftdi). This must be done for all four COM ports. When all four
COM ports are installed, the device manager recognizes these devices and indicates the COM port numbers, as
shown in Figure 2-21.
Figure 2-21. Installed FTDI Drivers
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2.9 Connecting the AWR2944EVM to the DCA1000 EVM
The AWR2944EVM can be connected to the DCA1000 EVM platform to allow for LVDS data streaming. Figure
2-22 shows the AWR2944EVM interfaced to the DCA1000 EVM.
Figure 2-22. AWR2944EVM and DCA1000 EVM
When using the AWR2944EVM with the DCA1000 EVM, the following settings must be used.
1. Set the AWR2944EVM to SOP2 mode.
Figure 2-23. SOP2 Mode
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