Understanding the FCS_CTRL in Circuit Schematic

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The fcs_ctrl signal in the circuit schematic is related to the control of the cyclic redundancy check (CRC) process. It plays a crucial role in ensuring data integrity by generating a checksum for error detection. The value of fcs_ctrl is derived from specific operations outlined in the CRC algorithm, which can be further explored in the linked resource. Understanding the fcs_ctrl requires familiarity with how CRC works and its implementation in digital circuits. For detailed insights, reviewing the provided links will clarify the generation and function of the fcs_ctrl signal.
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http://vlsihomepage.com/wp-content/uploads/2007/10/crc_schematic.gif

Can someone explain to me what is the fcs_ctrl is?

I saw this circuit in this website(http://www.nigamanth.net/vlsi/ ).After I read it, I still don't understand how does the fcs_ctrl value comes from.

Anyone can explain it to me?

Thanks!
 
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There is an explanation of that control signal at the website you cite, but a couple links down:

http://nigamanth.net/vlsi/2007/10/12/cyclic-redundancy-check-crc/

.
 
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