nw_bitstuff_pkg Package Body Reference

Package >> nw_bitstuff_pkg

Functions
t_slv_arr	f_bitstuff_enc ( data: in t_slv_arr run_length: in positive run_type: in std_logic get_length: in boolean false )
t_slv_arr	f_bitstuff_enc ( data: in t_slv_arr run_length: in positive run_type: in std_logic '1' )
	Encode data.
natural	f_bitstuff_enc_len ( data: in t_slv_arr run_length: in positive run_type: in std_logic '1' )
	Get encoded data length.
t_slv_arr	f_bitstuff_dec ( data: in t_slv_arr run_length: in positive run_type: in std_logic get_length: in boolean false )
t_slv_arr	f_bitstuff_dec ( data: in t_slv_arr run_length: in positive run_type: in std_logic '1' )
	Decode data.
natural	f_bitstuff_dec_len ( data: in t_slv_arr run_length: in positive run_type: in std_logic '1' )
	Get decoded data length.

Member Function Documentation

f_bitstuff_enc()

t_slv_arr f_bitstuff_enc (   data in t_slv_arr ,   run_length in positive ,   run_type in std_logic ' 1 '   )

Function

Encode data.

Parameters

data	Data array (1bit)
run_length	Maximum run length before stuff bit is inserted
run_type	Run-length value (default '1')

Returns

Encoded data

Encode data with bit-stuffing. If a sequence of bits with value run_type longer than run_length is enconutered, a stuff bit of inverse value is inserted.

Example use

encoded_data := f_bitstuff_enc(data_1bit, 5);

f_bitstuff_enc_len()

natural f_bitstuff_enc_len (   data in t_slv_arr ,   run_length in positive ,   run_type in std_logic ' 1 '   )

Function

Get encoded data length.

Parameters

data	Data array (1bit)
run_length	Maximum run length before stuff bit is inserted
run_type	Run-length value (default '1')

Returns

Encoded data length

Get length of encoded data after applying bit stuffing.

Example use

v_len := f_bitstuff_enc_len(data_1bit, 5);

f_bitstuff_dec()

t_slv_arr f_bitstuff_dec (   data in t_slv_arr ,   run_length in positive ,   run_type in std_logic ' 1 '   )

Function

Decode data.

Parameters

data	Data array (1bit)
run_length	Maximum run length before stuff bit is inserted
run_type	Run-length value (default '1')

Returns

Decoded data

Decode bit-stuffed data. Remove bits inserted by the encoding process.

Example use

decoded_data := f_bitstuff_dec(data_1bit, 5);

f_bitstuff_dec_len()

natural f_bitstuff_dec_len (   data in t_slv_arr ,   run_length in positive ,   run_type in std_logic ' 1 '   )

Function

Get decoded data length.

Parameters

data	Data array (1bit)
run_length	Maximum run length before stuff bit is inserted
run_type	Run-length value (default '1')

Returns

Decoded data length

Get length of decoded data after bit stuffing is removed.

Example use

v_len := f_bitstuff_dec_len(data_1bit, 5);

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

• nw_codec/src/nw_bitstuff_pkg.vhd