efex_topo_tx Entity Reference

efex topo protocol More...

Inheritance diagram for efex_topo_tx:

Entities
Behavioral	architecture
	efex topo protocol More...

Libraries
IEEE
infrastructure_lib

Use Clauses
STD_LOGIC_1164
NUMERIC_STD
synch_type	Package <synch_type>

Generics
NCOUNTERS	integer := 12
	number of tx mgts

Ports
clk280	in	std_logic
		clock 280MHz
reset	in	std_logic
		reset
rst	in	std_logic
		input reset generated by the not locked 40MHz MMC
sorted_sync	in	std_logic
		Output sync, high on the first clock cycle of the BC.
sorted_synch_int	out	std_logic
		internally generated out put synch
bcn	in	std_logic_vector ( 3 downto 0 )
		bcn from algo block
tob_data	in	std_logic_vector ( 31 downto 0 )
		Algorithm external data structure, defined in AlgoDataTypes.vhd.
sorted_valid	in	std_logic
		Output data valid, high when correspondent output data are valid.
tx_datai_0	out	std_logic_vector ( 33 downto 0 )
		Output data to the mgt that transimits to the L1Topo.
tx_datai_1	out	std_logic_vector ( 33 downto 0 )
tx_datai_2	out	std_logic_vector ( 33 downto 0 )
tx_datai_3	out	std_logic_vector ( 33 downto 0 )
tx_datai_4	out	std_logic_vector ( 33 downto 0 )
tx_datai_5	out	std_logic_vector ( 33 downto 0 )
tx_datai_6	out	std_logic_vector ( 33 downto 0 )
tx_datai_7	out	std_logic_vector ( 33 downto 0 )
tx_datai_8	out	std_logic_vector ( 33 downto 0 )
tx_datai_9	out	std_logic_vector ( 33 downto 0 )
tx_datai_10	out	std_logic_vector ( 33 downto 0 )
tx_datai_11	out	std_logic_vector ( 33 downto 0 )

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 at line 21 of file efex_topo_tx.vhd.

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The documentation for this class was generated from the following file:

• Infrastructure/process_Fpga_common/src/Data_Path/efex_topo_tx.vhd