On September 1, 2021, the leading semiconductor in the Asia-Pacific market is committed to the Asia-Pacific region.ComponentDistributor---LargeThe holding announced that its world launched NXP-based (NXP) NCJ29D5 Digital Car Key Solution.

Diagram 1 - Digital Car Key Solution of NXP Product NXP Products Digital Car Key Solution

The arrival of the car era allows wireless access technology into the Volkswagen 's Vision. The traditional electronic car key for PKE / RKE technology, although the use of the car has brought great convenience, but there is also a hidden danger that is easy to be subject to relay attack, mobile phone Bluetooth positioning. Based on NXP NCJ29D5-based digital car key solutions, Daclian GDE is embedded in which UWB cm positioning techniques are embedded in which not only has higher positioning accuracy, but also supports multiple functions such as mobile phone operation without key entry, one-button start.

Diagram 2 - Big Digital World Foundation Based on NXP Products Digital Car Key Solutions

This program is mainly divided into 5 parts, namely: key, body anchor, car anchor point, base stationBluetoothAnd BCM, where the key is composed of BLE KW38 + UWB NCJ29D5. NCJ29D5 is the first product of NXP launched a new generation of ultra-wideband (UWB) IC series, dedicated to meeting the connection and functional safety needs of the global auto industry. The UWB IC enables the car to accurately identify the user location, and the positioning error is accurate to the centimeter level. This can provide the same convenience as a first-class remote key based on the use of smartphones. Users can open the phone in pockets or packets to open and boot the car and enjoy a safe remote parking service through smartphones. In addition, new UWB ICs can also maximize the risk of trunk attacks.

In terms of performance, NCJ29D5 complies with the IEEE 802.15.4 HRP UWB PHY standard, which can operate at a high frequency band of 6.5 GHz to 8.0 GHz (AES-128 and AES-256), and has excellent anti-interference ability. In design, the device adoptsARM® Cortex-M33 32-bit processor, based on ARM® AHB-LITE bus matrix and dual master NS-DMADesign, fast data transmission can be achieved. Not only that, NCJ29D5 also has ultra-low power consumption, and Hard Power Down State can reach the NA level, and built-in configurable limiting machines can be used for buttons.BatteryApplication of power supply.

Figure 3 - Scene application diagram of the car digital key solution for NXP products based on NXP products

Core technical advantage:

• UWB is a non-carrier signal, using the narrow pulse transmission data of the nanosecond level, with a bandwidth of 500 MHz;
• Accurate positioning, centimeter positioning can be realized;
• The system has a low complexity, and the transmission signal power spectral density is low;
• Frequency range: 3.1GHz ~ 10.6GHz,Wi-fi/ Bluetooth and other signals coexist;
• The channel decline is not sensitive and multipath resolution.