SHAKEDOWN

ENTITY SHAKEDOWN IS

Merges input MVB of N items to output MVB of M items. There can be at most M items valid on input MVB, otherwise, items might get lost, if you . Can be used as combinational logic with OUTPUT_REG disabled.

Working principle of SHAKEDOWN.

Situation with more valid items then OUTPUTS.

Situation, where there are more vld items on INPUT interface then OUTPUTS. SHAKEDOWN does not solve this situation and when not solved externally, items may get lost.

Generics

Generic	Type	Default	Description
INPUTS	integer	32	Number of inputs (at most OUTPUTS valid!!!)
OUTPUTS	integer	4	Number of outputs
DATA_WIDTH	integer	32	Data width of each input/output in bits
OUTPUT_REG	boolean	false	Output register enable

Ports

Port	Type	Mode	Description
CLK	std_logic	in
RESET	std_logic	in
DIN	std_logic_vector(INPUTS*DATA_WIDTH-1 downto 0)	in	Input data N item MVB
DIN_VLD	std_logic_vector(INPUTS-1 downto 0)	in	Input data valid
DIN_SRC_RDY	std_logic	in	Input data ready
DIN_DST_RDY	std_logic	out
DOUT	std_logic_vector(OUTPUTS*DATA_WIDTH-1 downto 0)	out	Output data M item MVB
DOUT_VLD	std_logic_vector(OUTPUTS-1 downto 0)	out	Output data valid
DOUT_SRC_RDY	std_logic	out	Output data ready
DOUT_DST_RDY	std_logic	in

MERGE_N_TO_M

ENTITY MERGE_N_TO_M IS

OBSOLETE!!! Use at your own risk. This component is used by SHAKEDOWN. Merges N item MVB into M item MVB, on RX interface, there must be at most M items marked as valid, otherwise, they will be lost!. This component can be used as combinational logic.

Generics

Generic	Type	Default	Description
INPUTS	integer	32	Number of inputs (at most M active!!!)
OUTPUTS	integer	4	Number of outputs
DATA_WIDTH	integer	32	Data width (LSB of each item is valid bit!!!)
OUTPUT_REG	boolean	true	Pipe enable

Ports

Port	Type	Mode	Description
CLK	std_logic	in	Common clock
RESET	std_logic	in	Common reset
INPUT_DATA	std_logic_vector(INPUTS*DATA_WIDTH-1 downto 0)	in	Input MVB N item interface
INPUT_SRC_RDY	std_logic	in
INPUT_DST_RDY	std_logic	out
OUTPUT_DATA	std_logic_vector(OUTPUTS*DATA_WIDTH-1 downto 0)	out	Output MVB M item interface
OUTPUT_SRC_RDY	std_logic	out
OUTPUT_DST_RDY	std_logic	in