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Introduction

TJA1081TS,118 is an interface designed for the integrated physical connection between control units and components and tooling. It is commonly used in the automotive industry, and is suitable for the communication and diagnostics between different control units. It is a specialized interface compliant to ISO9141-2 standard and ISO14230-4 KWP2000 (Keyword Protocol 2000). The following article will discuss the TJA1081TS,118 application field and working principle.

Application Field

The TJA1081TS,118 interface is mainly used in onboard diagnostics in the automotive industry. In automobiles, there are many control units, including engine control units, dashboard control units, and chassis control units. Additionally, components like air conditioners and audio systems are connected to the system. These control units need to communicate with tools and peripherals to facilitate maintenance work. The TJA1081TS,118 interface supports the communication protocol ISO9141-2 and ISO14230-4 KWP2000, and is the most common solution for automotive communication and diagnostics.

The TJA1081TS,118 interface is also used in other industries such as the industrial automation and wireless communication fields where components and control units are used. The interface supports a wide range of data transfer speed, from DC up to 19200 kbit/s. It supports communication channels from single wire halfduplex up to four wire full duplex. The interface can be also used as an actuator with firmware update support.

Working Principle

The two most common protocols used in the TJA1081TS,118 interface are ISO9141-2 and ISO14230-4 KWP2000. The ISO9141-2 protocol is a 10.4kbit/s, half-duplex protocol on a single-wire cable and it is commonly used in MCU communication. The second protocol ISO14230-4 KWP2000 is a 10.4kbit/s, full-duplex protocol on a two-wire cable. It is a communication protocol used in modern controller systems and is an extension from older ISO14230(KWP2000) protocol to improve performance.

The TJA1081TS,118 interface works on a simple principle. It converts the physical signals into logical signals which can be understood by the control unit. It is responsible for the conversion of logical signals from the differential pair into logical signals which can be understood by the receivers/transmitters. It also provides the necessary protection for the system data bus. It works bidirectionally, so signals can be received on both ends and forwarded to the receiving circuit.

The TJA1081TS,118 interface is based on the ISO 261x, 262x, and KLINx communication protocols. The ISO261x is a single-wire protocol, while ISO262x and KLINx are two-wire protocols. The two wires consist of a data line and a control line. The data line is used to transfer the data while the control line is used to control the flow of data. The TJA1081TS,118 interface is connected to a high-voltage distributed bus and provides isolation for the system.

The TJA1081TS,118 interface is designed for high reliability and features a low-power consumption and high-speed transfer rate. The interface also supports wake-up detection, so the system can be awakened from a deep sleep state. The interface also supports self-reconfiguration and error detection, so any data losses are minimized.

Conclusion

TJA1081TS,118 is a specialized interface used in the automotive industry and other industrial fields to connect different control units and components. The interface works on two protocols ISO9141-2 and ISO14230-4 KWP2000 for data communication. It provides protection for the system as well as features for low-power consumption, high-speed transfer rate, wake-up detection, and error detection. Overall, the TJA1081TS,118 is a reliable and efficient interface with many applications.

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