Detailed Description

lpgbtfpga_framealigner - MGT word aligner (Pattern search)

The lpgbtfpga_framealigner module ask for clock shift to align the frame header.

Definition at line 20 of file lpgbtfpga_framealigner.vhd.

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

Entities
behavioral	architecture
	lpgbtfpga_framealigner - MGT word aligner (Pattern search) More...

Libraries
ieee
	Include the IEEE VHDL standard LIBRARY.

Use Clauses
ieee.std_logic_1164.all
ieee.numeric_std.all
work.lpgbtfpga_package.all
	Include the lpGBT-FPGA specific package.

Generics
c_wordRatio	integer
	Word ration: frameclock / mgt_wordclock.
c_wordSize	integer
	Size of the mgt word.
c_headerPattern	std_logic_vector
	Header pattern specified by the standard.
c_allowedFalseHeader	integer
	Number of false header allowed to avoid unlock on frame error.
c_allowedFalseHeaderOverN	integer
	Number of header checked to know wether the lock is lost or not.
c_requiredTrueHeader	integer
	Number of true header required to go in locked state.
c_bitslip_mindly	integer := 1
	Number of clock cycle required WHEN asserting the bitslip SIGNAL.
c_bitslip_waitdly	integer := 40
	Number of clock cycle required before being back in a stable state.

Ports
clk_pcsRx_i	in std_logic
	MGT Wordclock.
rst_pattsearch_i	in std_logic
	Rst the pattern search state machines.
cmd_bitslipCtrl_o	out std_logic
	Bitslip SIGNAL to shift the parrallel word.
sta_headerLocked_o	out std_logic
	Status: header is locked.
sta_headerFlag_o	out std_logic
	Status: header flag (1 pulse over c_wordRatio)
sta_bitSlipEven_o	out std_logic
	Status: number of bit slips is even.
dat_word_i	in std_logic_vector ( c_headerPattern ' length - 1 downto 0 )
	Header bits from the MGT word (compared with c_headerPattern)

Entities