SPRACM3E August 2021 – January 2023 F29H850TU , F29H859TU-Q1 , TMS320F280021 , TMS320F280021-Q1 , TMS320F280023 , TMS320F280023-Q1 , TMS320F280023C , TMS320F280025 , TMS320F280025-Q1 , TMS320F280025C , TMS320F280025C-Q1 , TMS320F280033 , TMS320F280034 , TMS320F280034-Q1 , TMS320F280036-Q1 , TMS320F280036C-Q1 , TMS320F280037 , TMS320F280037-Q1 , TMS320F280037C , TMS320F280037C-Q1 , TMS320F280038-Q1 , TMS320F280038C-Q1 , TMS320F280039 , TMS320F280039-Q1 , TMS320F280039C , TMS320F280039C-Q1 , TMS320F280040-Q1 , TMS320F280040C-Q1 , TMS320F280041 , TMS320F280041-Q1 , TMS320F280041C , TMS320F280041C-Q1 , TMS320F280045 , TMS320F280048-Q1 , TMS320F280048C-Q1 , TMS320F280049 , TMS320F280049-Q1 , TMS320F280049C , TMS320F280049C-Q1 , TMS320F28384D , TMS320F28384S , TMS320F28386D , TMS320F28386S , TMS320F28388D , TMS320F28388S , TMS320F28P650DH , TMS320F28P650DK , TMS320F28P650SH , TMS320F28P650SK , TMS320F28P659DH-Q1 , TMS320F28P659DK-Q1 , TMS320F28P659SH-Q1
Fast Serial Interface (FSI) is capable to send data at a rate up to 200Mbps across different operating voltage levels over the isolation barriers. FSI can achieve sub 100 nanoseconds time synchronized event triggering in multi-device network topologies. This eliminates the need for any additional synchronism signal between devices saving device resource and additional design cost.
To realize event sync mechanism over FSI, the lead device should trigger the FSITX module at regular time intervals, using operation similar to a timer, to send a synchronization request packet to all devices in the network. Receiving the packet from the lead device, each node device can initiate a local synchronization mechanism.
The sync packet itself may arrive at different time intervals for each node device. The interpretation of the sync packet on the individual node devices have to be adjusted locally.
Using 1 clock and 1 data line of the FSI module, the synchronization packet is sent at frequent time intervals that ensures that all of the node devices remain in synchronism. The regular application specific data is sent over these same lines, hence it reduces the need of extra wires to ensure synchronism amongst all the node devices.