描述 Description

The AWRL684x mmWave Sensor device is TI?s low power and Hardware Security Module (HSM) enabled integrated single chip mmWave sensor based on FMCW radar technology. The device is capable of operation in the 57GHz to 64GHz band and is designed for various automotive in-cabin use cases. The device also takes advantage of a low power architecture to enable power-constrained applications. The device is split into the following four switchable power domains:

The AWRL684x is specifically designed to be able to dynamically control the power states of the above-mentioned power domains based on application requirements. The device also features various low-power states. These low-power states are achieved by turning off internal IP blocks of the device. AWRL684x device also provides the option of retaining memory during these low power states to retain critical information such as application image and RF profiles across different power modes.

A Hardware Security Module (HSM) is also provisioned in the device (available with 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.

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. AWRL684x is designed for low power, self-monitored, ultra-accurate radar systems in the automotive space for applications like child presence detection, intrusion monitoring and occupancy detection.

特性 Features

FMCW Transceiver

Integrated PLL, transmitter, receiver, baseband and ADC

57 - 64GHz coverage With 7GHz continuous bandwidth

4 receive channels and 3 to 4 transmit channels (AWRL6843 with 3 channels and AWRL6844 with 4 channels)

13dBm typical output power per Tx

12.5dB typical noise figure

-89dBc/Hz typical phase noise at 1MHz

FMCW operation

10MHz IF bandwidth, real-only Rx channels

Ultra-accurate chirp engine based on fractional-N PLL

Per transmitter binary phase shifter



Processing elements

Arm R5F core with double precision FPU (200MHz)

Hardware Accelerator (HWA 1.2) for FFT, log magnitude, and CFAR operations (200MHz)

C66x DSP (450MHz) for post processing Radar data



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

Two power rails for 1.8V IO mode, Three power rails for 3.3V IO mode





FCCSP package having 17 x 17 BGA grid, 207 BGA balls; Package size: 9.1mm x 9.1mm

Built-in calibration and self-test

Built-in Firmware (ROM)

Self-Contained on chip calibration system



Host Interface

3 x UART

2 x CAN-FD

2 x SPI



LVDS for data transfer of raw ADC sample capture

Other interfaces available to user application

QSPI

I2C

JTAG

GPIOs

PWM Interface

GPADCs



Device security

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/RSA, AES (up to 256 bit), SHA (up to 512 bit), TRNG/DRBG and SM2, SM3, SM4(Chinese Crypto Algorithms)

ISO21434 Cyber Security certification targeted



Internal memory

On-Chip RAM - 2.5MBytes (2MB for AWRL6843)

R5F TCMA RAM - 512KB

R5F TCMB RAM - 256KB

DSS L2 RAM - 384KB

DSS L3 RAM - 512KB (available only in AWRL6844)

DSS L3 Shared RAM - 896KB (can be shared with TCMs)



Functional Safety-Compliant Targeted

Developed for Functional Safety Applications

Hardware integrity up to ASIL B targeted

ISO26262 Functional Saftey certification targeted





AEC Q-100 targeted



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 conditions

Junction Temperature Range: –40°C to 140°C