MFB Cutter Simple
- ENTITY MFB_CUTTER_SIMPLE IS
This component cuts the specified number of items from each incoming packet. The data which are not cut out, are shifted to the original SOF position and the EOF is lowered by the number of items which have been cut out.
Generics
PortsGeneric
Type
Default
Description
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MFB DATA BUS CONFIGURATION:
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Frame size restrictions:
For REGION_SIZE = 1: MIN = (CUTTED_ITEMS+1)*ITEM_WIDTH bits
For REGION_SIZE >= 2: MIN = (REGION_SIZE*BLOCK_SIZE+CUTTED_ITEMS)*ITEM_WIDTH bits
REGIONS
natural
2
any positive
REGION_SIZE
natural
8
any power of two
BLOCK_SIZE
natural
8
any power of two except 1
ITEM_WIDTH
natural
8
any positive
META_WIDTH
natural
0
Width of MFB Metadata
META_ALIGNMENT
natural
0
Metadata is valid either with:
SOF (MODE 0)
EOF (MODE 1)
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OTHER CONFIGURATION:
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CUTTED_ITEMS
natural
4
Count of cutted items from SOF. Maximum value is REGION_SIZE*BLOCK_SIZE.
Port
Type
Mode
Description
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CLOCK AND RESET
=====
=====
CLK
std_logic
in
RESET
std_logic
in
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INPUT MFB INTERFACE WITH CUT ENABLE FLAGS
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=====
RX_DATA
std_logic_vector(REGIONS*REGION_SIZE*BLOCK_SIZE*ITEM_WIDTH-1 downto 0)
in
RX_META
std_logic_vector(REGIONS*META_WIDTH-1 downto 0)
in
RX_SOF
std_logic_vector(REGIONS-1 downto 0)
in
RX_EOF
std_logic_vector(REGIONS-1 downto 0)
in
RX_SOF_POS
std_logic_vector(REGIONS*max(1,log2(REGION_SIZE))-1 downto 0)
in
RX_EOF_POS
std_logic_vector(REGIONS*max(1,log2(REGION_SIZE*BLOCK_SIZE))-1 downto 0)
in
RX_SRC_RDY
std_logic
in
RX_DST_RDY
std_logic
out
RX_CUT
std_logic_vector(REGIONS-1 downto 0)
in
Enable of cutting, valid with each SOF.
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OUTPUT MFB INTERFACE
=====
=====
TX_DATA
std_logic_vector(REGIONS*REGION_SIZE*BLOCK_SIZE*ITEM_WIDTH-1 downto 0)
out
TX_META
std_logic_vector(REGIONS*META_WIDTH-1 downto 0)
out
valid on SOF
TX_SOF
std_logic_vector(REGIONS-1 downto 0)
out
TX_EOF
std_logic_vector(REGIONS-1 downto 0)
out
TX_SOF_POS
std_logic_vector(REGIONS*max(1,log2(REGION_SIZE))-1 downto 0)
out
TX_EOF_POS
std_logic_vector(REGIONS*max(1,log2(REGION_SIZE*BLOCK_SIZE))-1 downto 0)
out
TX_SRC_RDY
std_logic
out
TX_DST_RDY
std_logic
in