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Commits
cc9d4c04
Commit
cc9d4c04
authored
Mar 30, 2012
by
bradomyn
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linear_block_encoder.vhd
hdl/linear_block_code/syn/linear_block_encoder.vhd
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hdl/linear_block_code/syn/linear_block_encoder.vhd
View file @
cc9d4c04
-------------------------------------------------------------------------------
--! @file : linear_block_encoder.vhd
--! @author : Cesar Prados
--! @email : c.prados@gsi.de
-- Company : GSI
-- Created : 2012 03
-- Update : 2012 03
-- Platfrom : FPGA-generic
-- Standard : VHDL
-------------------------------------------------------------------------------
--! @brief : Packet for the Golay family encoder encoder. More
-- information about Golay Code, "Error Correction Coding" Todd K.
-- Moon. The entity encodes data words following the (24,12,8) Golay Code
-- It is systematic,first 12 bits [23,12] are the original information
-- last 12 bits [11,0] are the redundant bits
-------------------------------------------------------------------------------
-- Copyright (c) 2012 Cesar Prados
-------------------------------------------------------------------------------
--! Revisions :
--! Date Version Author Description
-------------------------------------------------------------------------------
--! @todo <next thing to do>
-------------------------------------------------------------------------------
library
IEEE
;
library
IEEE
;
use
IEEE
.
STD_LOGIC_1164
.
ALL
;
use
IEEE
.
STD_LOGIC_1164
.
ALL
;
use
IEEE
.
STD_LOGIC_ARITH
.
ALL
;
use
IEEE
.
STD_LOGIC_ARITH
.
ALL
;
use
IEEE
.
STD_LOGIC_UNSIGNED
.
ALL
;
use
IEEE
.
STD_LOGIC_UNSIGNED
.
ALL
;
--! linear_block_package library
use
work
.
linear_block_package
.
all
;
entity
linear_block_enc
is
entity
linear_block_enc
is
port
(
clk
:
in
std_logic
;
port
(
clk
:
in
std_logic
;
data_in
:
in
std_logic_vector
(
11
downto
0
)
;
data_in
:
in
data_vector
;
encoded_out
:
out
std_logic_vector
(
23
downto
0
)
encoded_out
:
out
word_vecor
);
);
end
linear_block_enc
;
end
linear_block_enc
;
architecture
Behavioral
of
linear_block_enc
is
architecture
Behavioral
of
linear_block_enc
is
signal
check_bits
:
std_logic_vector
(
11
downto
0
)
:
=
(
others
=>
'0'
);
signal
check_bits
:
data_vector
:
=
(
others
=>
'0'
);
-- b matrix
-- b matrix
-- 555 1 0 1 0 1 0 1 0 1 0 1 0
-- 555 1 0 1 0 1 0 1 0 1 0 1 0
...
@@ -37,37 +66,18 @@ architecture Behavioral of linear_block_enc is
...
@@ -37,37 +66,18 @@ architecture Behavioral of linear_block_enc is
check_bits
(
11
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
6
)
check_bits
(
11
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
10
);
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
10
);
check_bits
(
10
)
<=
data_in
(
1
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
10
)
<=
data_in
(
1
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
9
)
<=
data_in
(
0
)
xor
data_in
(
2
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
9
)
<=
data_in
(
0
)
xor
data_in
(
2
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
8
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
3
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
11
);
check_bits
(
8
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
3
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
11
);
check_bits
(
7
)
<=
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
4
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
7
)
<=
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
4
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
6
)
<=
data_in
(
0
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
5
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
6
)
<=
data_in
(
0
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
5
)
xor
data_in
(
9
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
5
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
6
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
5
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
6
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
4
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
7
)
xor
data_in
(
11
);
check_bits
(
4
)
<=
data_in
(
0
)
xor
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
7
)
xor
data_in
(
11
);
check_bits
(
3
)
<=
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
8
)
xor
data_in
(
11
);
check_bits
(
3
)
<=
data_in
(
1
)
xor
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
8
)
xor
data_in
(
11
);
check_bits
(
2
)
<=
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
9
)
xor
data_in
(
11
);
check_bits
(
2
)
<=
data_in
(
2
)
xor
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
6
)
xor
data_in
(
7
)
xor
data_in
(
9
)
xor
data_in
(
11
);
check_bits
(
1
)
<=
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
1
)
<=
data_in
(
3
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
7
)
xor
data_in
(
8
)
xor
data_in
(
10
)
xor
data_in
(
11
);
check_bits
(
0
)
<=
data_in
(
0
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
11
);
check_bits
(
0
)
<=
data_in
(
0
)
xor
data_in
(
4
)
xor
data_in
(
5
)
xor
data_in
(
6
)
xor
data_in
(
8
)
xor
data_in
(
9
)
xor
data_in
(
11
);
end
if
;
end
if
;
end
process
;
end
process
;
...
...
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