1 Features

? FMCW transceiver

– Integrated PLL, transmitter, receiver, baseband

and ADC

– 76 to 81GHz coverage with over 4.5GHz

continuous bandwidth

– 4 receive and 4 transmit channels for PCB

interface to antennas

– Per transmit phase shifter

– Ultra-accurate chirp engine based on fractional-

N PLL

– TX power

? 13.5dBm

– RX noise figure

? 12dBm

– Phase noise at 1MHz

? -96dBc/Hz (76 to 77GHz)

? -95dBc/Hz (76 to 81GHz)

? 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

– 10/100Mbps 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

– 4MBytes of ‘On Chip’ RAM

– 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 SIL-2 targeted

? 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 3.3V and

1.8V

? Clock source

– 40MHz crystal with internal oscillator

– Supports external oscillator at 40MHz

– Supports externally driven clock (square or sine

wave) at 40MHz

? Effective Power Management

– Recommended LP87745 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

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

package for easy assembly and low-cost PCB

design

– Small solution size

? Supports wide temperature operating range

– Operating junction temperature range: –40°C to

125°C

2 Applications

? Industrial transportation

? Traffic monitoring

? Parking barriers

? Factory automation

3 Description

The IWR2944 is a single-chip mmWave sensor composed of a FMCW transceiver, capable of operation in the

76 to 81GHz band, radar data processing elements, and peripherals for in-vehicle networking. The IWR2944 is

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

form factor and minimal BOM. The IWR2944 is a device for low-power, self-monitored, ultra-accurate radar

systems in the industrial space.

TI’s low-power 45nm RFCMOS process enables a monolithic implementation of a 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 industrial interface applications. The hardware accelerator block (HWA 2.1) 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.