Automotive Entry Bluetooth And CAN Module Reference Design

The BLE and CAN satellite tv for pc module streamlines automotive design with excessive bandwidth, low energy consumption, auto-addressing, and exact Bluetooth localization.

Integrating Bluetooth Low Vitality (BLE) and Management Space Community Versatile Knowledge Charge (CAN-FD) in a satellite tv for pc module addresses the evolving wants of recent automotive programs. This superior module is designed for automobile entry functions, akin to Passive Entry Passive Begin (PEPS) and Telephone as a Key (PaaK) digital important programs, providing enhanced safety, improved connectivity, and superior energy effectivity. By leveraging the excessive bandwidth capabilities of CAN-FD and the low energy consumption of BLE, this module gives a strong and dependable communication framework for in-vehicle networks. The TIDA-020032 automobile Entry Bluetooth Low Vitality + CAN satellite tv for pc module reference design by Texas Devices (TI) streamlines the design course of for automotive programs.

The satellite tv for pc module reference design is crafted for Bluetooth Low Vitality PEPS and PaaK digital key automobile entry programs. It showcases how CAN-FD communication could be built-in with our Bluetooth wi-fi MCUs, assembly the necessity for larger bandwidth in in-vehicle community communications. Further advantages embrace decreased energy consumption in sleep mode, an computerized CAN addressing technique for enhanced manufacturing effectivity, connection monitoring for improved Bluetooth localization accuracy, and a compact PCB able to measuring Bluetooth Angle of Arrival (AoA) and Acquired Sign Power Indicator (RSSI). 

The automobile entry programs require larger in-vehicle information communication speeds, using CAN or CAN-FD communications between satellite tv for pc modules and the central automobile entry module positioned within the physique management module (BCM) or a separate digital management unit (ECU). The elevated community bandwidth permits for the direct transmission of uncooked measurement information, akin to angle of arrival (AoA) IQ information, to the central automobile entry module for processing. A novel function of the design is its auto-addressing functionality. Auto-addressing allows all satellite tv for pc modules to be flashed with the identical firmware, simplifying manufacturing by eliminating the necessity to assign completely different CAN IDs to every module.

Throughout preliminary power-on in manufacturing, every satellite tv for pc module receives a singular CAN tackle similar to its location in or across the car, permitting the central automobile entry module to determine the supply of localization measurement information primarily based on the CAN ID. The compact resolution gives the flexibleness for automobile entry system designers to judge and implement one of the best Bluetooth localization strategies, enabling the addition of their mixture of strategies to their system.

A number of the key options of the reference design embrace:

• CAN, CAN-FD communications
• CAN auto-addressing
• 25-μA system sleep state (typical)
• Able to measuring Bluetooth AoA and RSSI
• Small 47.625-mm × 76.2-mm (1.875 in × 3 in) PCB
• Improved system efficiency with Bluetooth connection monitoring capabilities

TI has examined this reference design. It comes with a invoice of supplies (BOM), schematics, meeting drawing, printed circuit board (PCB) structure, and so forth. Yow will discover extra information concerning the reference design on the corporate’s web site. To learn extra about this reference design, click on right here.