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https://opencores.org/ocsvn/10_100m_ethernet-fifo_convertor/10_100m_ethernet-fifo_convertor/trunk
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//author :Renliang Gu
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//Email: gurenliang@gmail.com
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//note: if there are some errors, please feel free to contact me. Thank you very much!
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//Next step, reduce the resource consumed
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//version 0.5, defined many parameter to configure the IP core, making it easier to use.
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//version 0.3, create this file to be a common included one for future use to config the IP core
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//This file used to define some macro-varibles which can be used by all other files
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//NOTE!!! Olny one of the following two definitions can be open
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`define frameIDfromRx //frameID comes from Rxmodule
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//`define frameIDcount //frameID counts for itself by adding one every frame
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`define Preamble 64'hd555_5555_5555_5555
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//The MAC address of this MAC IP core and the other terminal on the Ethernet, can be changed!
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`define MAC_ADD 48'h0100_0000_0000 //mac address: 0x00-00-00-00-00-01
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`define PC_MAC_ADD 48'hffff_ffff_ffff //mac address of the other terminal
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`define frameidlen 24 //the id of the MAC frame
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`define uframelen 148 //148-bit
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`define num_uframe 8 //the number of uframes received once
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`define interval 8.25 //the interval between frames without send any data on fifo
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`define da_offset (8<<1) //8 byte before
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`define sa_offset (`da_offset+(6<<1)) //8+6 bytes before
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`define typelen_offset (`sa_offset+(6<<1))
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`define frameid_offset (`typelen_offset+(2<<1))//index of first bit of frameid
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`define data_offset (`frameid_offset+(`frameidlen>>2))
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//index of first bit of data
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