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Low-Cost TFT Instrument Cluster with Telematics

Overview

This design fully meets customer requirements for an instrument cluster with telematics. It includes connectivity, tell-tale indicators, Wi-Fi mirroring of a mobile screen, Bluetooth® Low Energy (LE) connection, and brightness control for a TFT and camera image display.

System Benefits:

  • Provides a cost-effective, compact, and simple design for real-world vehicle instrument clusters, delivering graphics and connectivity.
  • Includes sample application software to jumpstart development. The sample firmware, written in Bare Metal C code, eliminates the need for Linux or Android OS expertise.
  • Offers ready-to-use connectivity options on the reference board, including Wi-Fi, Bluetooth LE, Ethernet, GPS, and GSM-4G.
  • Features independent dual-port CAN, enabling connection with other ECUs on the vehicle bus and providing a separate interface for a diagnostic port.
  • Replaces the expensive SerDes camera interface with an HD Link, allowing connection to a low-cost analog camera via a Single Twisted Pair (UTP/STP) connection while maintaining video quality.
  • Supports a smartphone-like user interface using popular tools such as Qt and Candera.

Block Diagram

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AS252 AS252 AS252 AS252 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery 12V Battery Sheet.133 Double arrow.2150 Double arrow.2166 Label Text 10pt.2367 Label Text 10pt.2368 TFT Display (Up to 9") TFT Display (Up to 9") TFT Display(Up to 9") Real-Time Clock Real-Time Clock Real-Time Clock CAN 1 CAN CAN Light Sensor Light Sensor Light Sensor Wi-Fi Wi-Fi Wi-Fi Bluetooth Low Energy Bluetooth Low Energy Bluetooth Low Energy GPS GPS GPS GSM-4G GSM-4G GSM-4G Video Decoder Video Decoder Video Decoder AHL Camera Ref Design AHL Camera Ref Design AHL Camera Ref Design Connector Arrow Buck Controller/LDO Buck Controller/LDO Buck Controller/LDO Connector double arrow Connector double arrow.233 Connector double arrow.234 Connector double arrow.235 Connector double arrow.236 Connector double arrow.237 Connector double arrow.238 Connector double arrow.239 Connector double arrow.240 Connector Arrow.241 Communication Lines B.135 Communication Lines B.251 Reference Board Reference Board Reference Board Single Twisted Pair (UTP/STP) Single Twisted Pair (UTP/STP) Single Twisted Pair (UTP/STP) BT656 BT656 BT656 LVDS LVDS LVDS 3.3V/5V 3.3V/5V 3.3V/5V Connector double arrow.260 MCU MCU MCU MCU CAN 2 CAN CAN I2C 1 I2C I2C I2C 2 I2C I2C VCC VCC VCC UART/SPI UART/SPI UART/SPI UART 1 UART UART UART 2 UART UART UART 3 UART UART VDCE VDCE VDCE

Buck Controller / LDO

Buck Regulators (Integrated FETs)
Linear Regulators (LDO)

MCU

RH850 Automotive MCUs

Real-Time Clock

Real-Time Clocks

Light Sensor

Ambient Light Sensors

Wi-Fi

Low Power Wi-Fi

Bluetooth Low Energy

Bluetooth Low Energy

Video Decoder

Video Decoders/Encoders

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