AS8222

AS8222 Enhanced FlexRay Standard Transceiver 1 General Description The AS8222 is a high-speed fault tolerant device operating as interface between a generic FlexRay Communication Controller and the copper wiring. This device is the first FlexRay certified Transceiver for temperature ranges up to 150°C ambient temperature. For bare-die deliveries please contact ams for more information. The AS8222 is designed to extend the application range for high speed and safety critical time triggered bus systems in an automotive environment. The bus driver is protected against short circuits to the supply and GND. The AS8222 operates at baudrates up to 10 Mbps and is fully conforming to the FlexRay Electrical Physical Layer Specification V2.1 Rev B. The AS8222 provides a host controller interface consisting of Enable (EN) and Standby (STBN) input pins for mode handling by the microcontroller and the Error (ERRN) output pin, signalling failures and status information. The device supports the NORMAL mode with activated FlexRay bus transmitter and receiver, the RECEIVE_ONLY mode with activated receiver only to avoid unwanted disturbances while listening to the communication and the low-power modes STANDBY and SLEEP with very low power consumption. In case of undervoltage at one of the supply voltages (VBAT, VCC, and VIO) the device will change its mode to a low-power mode (either STANDBY or SLEEP mode) and the device will signal an error accordingly. In case of low voltage is detected on b...