1 Features

? FMCW Transceiver

– Integrated PLL, transmitter, receiver, baseband

and ADC

– 57GHz - 64GHz coverage with 7GHz

continuous bandwidth

– 3 receive channels and 2 transmit channels

– Range typically up to 25m

– 11dBm typical output power per Tx

– 11dB Typical noise figure

– -89dBc/Hz typical phase noise at 1MHz

– FMCW operation

– 5MHz IF bandwidth, real-only Rx channels

– Ultra-accurate chirp engine based on fractional-

N PLL

– Per transmitter binary phase shifter

? Processing elements

– Arm? M4F? core with single precision FPU

(160MHz)

– TI Radar Hardware Accelerator (HWA 1.2)

for FFT, log magnitude, and CFAR operations

(80MHz)

? Supports multiple low-power modes

– Idle mode and deep sleep mode

? Power management

– 1.8V and 3.3V IO support

– Built-in LDO network for enhanced PSRR

– BOM-Optimized and Power-Optimized modes

– One or two power rails for 1.8V IO mode, two or

three power rails for 3.3V IO mode

? Built-in calibration and self-test

– Built-in Firmware (ROM)

– Self-Contained on chip calibration system

? Host Interface

– UART

– CAN-FD

– SPI

– LIN

? RDIF (Radar Data Interface) for raw ADC sample

capture

? Other interfaces available to user application

– QSPI

– I2C

– JTAG

– GPIOs

– PWM Interface

? Internal memory

– 1MB of On-Chip RAM

– Configurable L3 shared memory for Radar

Cube

– Data and Code RAM of (512/640/768KB)

? Functional Safety-Compliant Targeted

– Developed for functional safety applications

– Hardware integrity up to ASIL-B targeted

? FCCSP package having 12 x 12 BGA grid, 102

BGA balls; Package size: 6.45mm x 6.45mm

? AEC Q-100 Qualified

? Clock source

– 40.0MHz crystal for primary clock

– Supports externally driven clock (Square/Sine)

at 40.0MHz

– 32kHz internal oscillator for low power

operations

? Supports temperature operating range

– Operating junction temperature range: –40°C to

125°C

2 Applications

? Interior cabin sensing

? Child presence detection

? Occupancy detection

? Driver vital sign monitoring

? Seat belt reminder

? Intruder detection

? Gesture based HMI

3 Description

The AWRL6432 mmWave Sensor device is an integrated single chip mmWave sensor based on FMCW radar

technology. The device is capable of operation in the 57GHz to 63.9GHz band and is partitioned into mainly four

power domains:

? RF/Analog Sub-System: This block includes all the RF and Analog components required to transmit and

receive the RF signals.

? Front-End Controller sub-System (FECSS): FECSS contains processor, responsible for radar front-end

configuration, control, and calibration.

? Application Sub-System (APPSS): APPSS is where the device implements a user programmable ARM

Cortex M4 allowing for custom control and automotive interface applications. Top Sub-System (TOPSS) is

part of the APPSS power domain and contains the clocking and power management sub-blocks.

? Hardware Accelerator (HWA): HWA block supplements the APPSS by offloading common radar processing

such as FFT, Constant False Alarm rate (CFAR), scaling, and compression.

AWRL6432 is specifically designed to have separate control for each of the above-mentioned power domains to

control the states (power ON or OFF) based on use case requirements. The device also features the capability

to exercise various low-power states like sleep and deep sleep, where low-power sleep mode is achieved by

clock gating and by turning off the internal IP blocks of the device. The device also provides the option of

keeping some contents of the device, like Application image or RF profile retained in such scenarios.

Additionally, the device is built with TI’s low power 45nm RF CMOS process and enables unprecedented

levels of integration in an extremely small form factor. AWRL6432 is designed for low power, self-monitored,

ultra-accurate radar systems in the automotive space for applications like child presence detection, intrusion

monitoring, gesture detection, and occupancy detection.