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FlexRay Development Platforms - Data transfer method | Cypress Semiconductor

FlexRay Development Platforms - Data transfer method

 Background |  Overview |  Features |  In-car Communication Protocol |  Target applications |  Data transfer method |  Difference with CAN |  Internal configuration of a node |  Electronic signals |  Bus Guardian |  Topology |  Segment configuration |  Protocol |  Status transition |  Error control |

FlexRay ASSP

FlexRay uses the time trigger protocol whereas CAN uses the event trigger protocol.
This enables the accurate data transfers according to the scheduling.

 Image example of FlexRay time trigger protocol

The data of FlexRay is transferred in the slot.

The image of each role (EPS, AT, etc.) and the corresponding slot is shown in the following figure.

 Image example of role of each slot

This enables "accurate data transfers according to a predefined schedule."

- Note -

Some parts of this site show only the outlines of the actual FlexRay standards to make them easily understood.