1 Features

• FMCW transceiver

– Integrated PLL, transmitter, receiver, baseband

and ADC

– 76- to 81-GHz coverage with 5-GHz available

bandwidth

– 4 receive and 3 – 4 transmit channels

(AWR2943 with 3 channels and AWR2944 with

4 channels) for PCB interface to antennas

– Per transmit phase shifter

– Ultra-accurate chirp engine based on fractional-

N PLL

– TX power

• 13.5 dBm

– RX noise figure

• 12 dBm

– Phase noise at 1 MHz

• -96 dBc/Hz (76 to 77 GHz)

• -95 dBc/Hz (76 to 81 GHz)

• Built-in calibration and self-test

– Built in firmware (ROM)

– Self-calibrating system across process and

temperature

• Processing elements

– Arm® Cortex-R5F® core (supports lock step

operation) @300MHz

– TI digital signal processor C66x @360MHz

– TI radar hardware accelerator (HWA2.1) for

operations like FFT, log magnitude, and

memory compression

– Multiple EDMA instances for data movement

• Host interface

– 2x CAN-FD

– 10/100 Mbps RGMII/RMII/MII Ethernet

• Supports a serial flash memory interface (loading

user application from QSPI flash memory)

• Other interfaces available to user application

– Up to 9 ADC channels

– 2 SPIs

– 4 UARTs

– I2C

– GPIOs

– 3 EPWMs

– 4-lane Aurora LVDS interface for raw ADC data

and debug instrumentation

– CSI2 Rx interface to enable playback of the

captured data

• On-Chip RAM

– 3.5 to 4MBytes (AWR2943 with 3.5MB and

AWR2944 with 4MB)

– Memory space split between DSP, MCU, and

shared L3

• Device security (on select part numbers)

– Programmable embedded hardware security

module (HSM)

– Secure authenticated and encrypted boot

support

– Customer programmable root keys, symmetric

keys (256 bit), asymmetric keys (up to RSA-4K

or ECC-512) with key revocation capability

– Cryptographic hardware accelerators: PKA with

ECC, AES (up to 256 bit), SHA (up to 512 bit),

TRNG/DRBG

• Functional safety compliant targeted

– Developed for functional safety applications

– Documentation will be available to aid ISO

26262 functional safety system design

– Hardware integrity up to ASIL B targeted

• AEC-Q100 qualified

• Advanced features

– Embedded self-monitoring with no external

processor involvement

– Embedded interference detection capability

• Power management

– On-die LDO network for enhanced PSRR

– LVCMOS IO supports dual voltage 3.3 V and

1.8 V

• Clock source

– 40-MHz crystal with internal oscillator

– Supports external oscillator at 40 MHz

– Supports externally driven clock (square or sine

wave) at 40 MHz

• Optimal Power Management Solution

– Recommended LP87745-Q1 Power

Management ICs (PMIC)

• Companion PMIC specially designed to

meet device power supply requirements

• Flexible mapping and factory programmed

configurations to support different use cases

• Cost-reduced hardware design

– 0.65-mm pitch, 12-mm × 12-mm flip chip BGA

package for easy assembly and low-cost PCB

design

– Small solution size

• Supports automotive temperature operating range

– Operating junction temperature range: –40°C to

140°C

2 Applications

• Lane change assist

• Blind spot detection

• Automatic emergency braking

• Adaptive cruise control

• Cross traffic alert

3 Description

The AWR294x is a single-chip mmWave sensor composed of a FMCW transceiver, capable of operation in the

76- to 81-GHz band, radar data processing elements, and peripherals for in-vehicle networking. The AWR294x

is built with TI’s low-power 45-nm RFCMOS process and enables unprecedented levels of integration in a small

form factor and minimal BOM. The AWR294x is an ideal solution for low-power, self-monitored, ultra-accurate

radar systems in the automotive space.

TI’s low-power 45-nm RFCMOS process enables a monolithic implementation of a 3-4 TX, 4 RX system

with integrated PLL, VCO, mixer, and baseband ADC. Integrated in the DSP subsystem (DSS), is TI's highperformance

C66x DSP for radar signal processing. The device includes a Radio Processor Subsystem (RSS),

which is responsible for radar front-end configuration, control, and calibration. Within the Main Subsystem

(MSS), the device implements a user-programmable Arm Cortex-R5F processor allowing for custom control

and automotive interface applications. The hardware accelerator block (HWA 2.0) supplements the DSS and

MSS by offloading common radar processing such as FFT, constant false alarm rate (CFAR), scaling, and

compression. This saves MIPS on the DSS and MSS, opening up resources for custom applications and

higher-level algorithms.

A Hardware Security Module (HSM) is also provisioned in the device (available for only secure part variants).

The HSM consists of a programmable Arm Cortex-M4 core and the necessary infrastructure to provide a secure

zone of operation within the device.

Simple programming model changes can enable a wide variety of sensor implementation (Short, Mid, Long) with

the possibility of dynamic reconfiguration for implementing a multimode sensor.