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TSS461C Datasheet(PDF) 1 Page - ATMEL Corporation |
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TSS461C Datasheet(HTML) 1 Page - ATMEL Corporation |
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1 / 57 page  1 4193G–AUTO–12/04 Features • Fully Compliant to VAN Specification ISO/11519-3 • Handles All Specified Module Types • Handles All Specified Message Types • Handles Retransmission of Frames on Contention and Errors • 3 Separate Line Inputs with Automatic Diagnosis and Selection • 1 Mbit/s Maximum Transfer Rate • Normal or Pulsed (Optical and Radio Mode) Coding • Intel®, NEC®, Texas Instruments® and Motorola® Compatible 8-bit Microprocessor Interface • Multiplexed Address and Data Bus • Idle and Sleep Modes • 128 Bytes of General-purpose RAM • DMA Capabilities for Message Handling • 14 Identifier Registers with All Bits Individually Maskable • 6-source Maskable Interrupt, Including an Interrupt-on-reset to Detect Glitches on the Reset Pin • Integrated Crystal or Resonator Oscillator with Internal Baud Rate Generator and Buffered Clock Output • Single +5V Power Supply • 0.8 µm CMOS Technology • SO24 Package Description Cost optimization in car manufacturing is of extreme importance today. Solutions to this problem often implies the use of more advanced and intelligent electronic circuits. The TSS461C is a circuit which allows the transfer of all the status information needed in a car or truck over a single low-cost wire pair, that minimizes the electrical wire usage. It can be used to interconnect powerful functions (ABS, dashboard, power train con- trol) and to control and interface car body electronics (lights, wipers, power window, etc.). The TSS461C is fully compliant with the ISO Standard 11519-3. This standard sup- ports a wide range of applications such as low-cost remote-control switches. Typically it is used for lamp control; complex, highly-autonomous, distributed systems like engine controls, which require fast and secure data transfers. The TSS461C is a microprocessor-interfaced line controller for mid-to-high complexity bus-masters and listeners like injection/ignition control calculators, dashboard control- lers and car stereo or mobile telephone CPUs. The microprocessor interface consists of a 256-bytes of RAM and a register area divided into 11 control registers, 14 channel register sets and 128 bytes of general purpose RAM, used as a message storage area, and a 6-source maskable interrupt. The circuit operates in RAM using DMA techniques, controlled by the channel and control registers. This allows virtually any microprocessor to interface with ease to the TSS461C, and to use the free RAM as a scratch pad. Messages are encoded in enhanced Manchester code, and an optional pulsed code for use with an optical or radio link, at a maximum bit rate of 1 Mbit/s. The TSS461C analyzes the messages received or transmitted according to 6 different criteria includ- ing some higher level checks. In addition, the bus interface has three separate inputs with automatic source diagno- sis and selection, that allows for multibus listening or the automatic selection of the most reliable source at any time if several line receivers are connected to the same bus. VAN Data Link Controller TSS461C |
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