efex_topo_tx.vhd File Reference

efex topo protocol More...

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Entities
efex_topo_tx	entity
	efex topo protocol More...
Behavioral	architecture
	efex topo protocol More...

Detailed Description

efex topo protocol

This module recives Tob data,sorted synch,valid and BCN from the merging block of the Tobs. Each of which contains all of the TOBs for a Bunch Crossing (for that fibre), plus a trailer. It generates frames from eFEX tobs and sends to L1Topo. Each frame takes 1 LHC tick to be transmitted ( as the frame contains six 32 bits of data payload and last 32 bit for trailer). The bits in the unused part of the frame are all set to zero. The CRC is calculated over the full frame of 7 x 32-bit words, in this calculation the CRC field is masked by zeros and the K characters. The design inserts the CRC result into the designated trailer field before transmission.

protocol between eFEX and L1topo Diagram

Author

Mohammed Siyad

Definition in file efex_topo_tx.vhd.