What does this CRC implementation mean by having a seed value?
...I am trying to implement a CRC algorithm in Verilog for the SENT sensor protocol. In a document put out by the SAE, they say their CRC uses the generator polynomial x^4 + x^3 + x^2 + 1 and a seed......
https://stackoverflow.com/questions/30654238/what-does-this-crc-implementation-mean-by-having-a-seed-value
Cyclic redundancy check - Wikipedia
...A CRC is called an n -bit CRC when its check value is n bits long. For a given n, multiple CRCs are possible, each with a different polynomial. Such a polynomial has highest degree n, which means it has n + 1 terms. In other words, the polynomial has a length of n + 1; its encoding requires n + 1 bits....
https://en.wikipedia.org/wiki/Cyclic_redundancy_check
CRC Generating and Checking - Microchip Technology
...This application describes the implementation of the CRC-16 polynomial. However, there are several for-mats for the implementation of CRC such as CRC-CCITT, CRC-32 or other polynomials. CRC is a common method for detecting errors in trans-mitted messages or stored data....
https://ww1.microchip.com/downloads/en/AppNotes/00730a.pdf
CRC16.dita - Infineon Technologies
...The CRC16 User Module computes a 2 to 16-bit cyclical redundancy check (CRC) algorithm on an input serial data stream. The polynomial can be defined to implement CRC functions, such as the CRC-16 or CCITT algorithm. A seed value can be specified to initialize the starting data value. Figure 1. CRC16 Block Diagram...
https://www.infineon.com/dgdl/Infineon-CRC16_V_3.2_13268-Software+Module+Datasheets-v03_02-EN.pdf?fileId=8ac78c8c7d0d8da4017d0fa99edb1a07
CRC-16 Hash Calculator ? Generate & Verify Checksums
...The CRC-16 Calculator is a powerful tool that helps you generate and verify 16-bit Cyclic Redundancy Check (CRC) values. This client-side utility supports multiple CRC-16 variants and input formats, making it ideal for developers, engineers, and anyone working with data integrity verification....
https://monocalc.com/tool/encode_decode/crc16_hash_calculator
16-bit CRC CCITT - NI Community
...The CRC- 16 bits code computes a 16-bit cyclical redundancy check (CRC) algorithm on an input serial data stream. The polynomial can be defined to implement CRC functions, such as the CRC-16 or CCITT algorithm. A seed value can be specified to initialize the starting data value. For CRC_CCITT: Polynomial Register = X16+ X12 + X5 +1 (0x1021)...
https://forums.ni.com/t5/Example-Code/16-bit-CRC-CCITT/ta-p/3492270
What is the theory behind seeding a CRC?
...It's recommended that the polynomial is seeded so that an all-zero message does not result in an all-zero checksum too. As far as I can tell, with a seed the polynomial division equation becomes:...
https://math.stackexchange.com/questions/3077723/what-is-the-theory-behind-seeding-a-crc
CRC-16 Calculation - Electrical Engineering Stack Exchange
...For your convenience, here's the polynomial for CRC-16. I have the following packet sequence that I want to compute the CRC-16 for: f0 f0 03 01 b4 04 01 67 40 17. The CRC is calculated to be 7a 8b by the hardware that I'm working with....
https://electronics.stackexchange.com/questions/16685/crc-16-calculation
crc16 - CRC-16 polynomial notation - Stack Overflow
...In the CRC-16 calculation what is the difference (if any) between polynomial (x16 + x15 + x2 + x0) and (x16 + x15 + x2 + 1)? Are the same (any number raised to zero is equal to one)?...
https://stackoverflow.com/questions/78073031/crc-16-polynomial-notation
13.12.2 Polynomial, Seed, and Expected Values
...Each of these two regions has 12 configuration bytes for the CRC calculation: four each for the 32-bit polynomial, seed and expected values. The online versions of the documents are provided as a courtesy. Verify all content and data in the device?s PDF documentation found on the device product page....
https://onlinedocs.microchip.com/oxy/GUID-7112B2B7-9230-4367-BBFB-942C5B51D8BF-en-US-15/GUID-DCAEBAF1-75B2-4843-AB0D-8ED6FDBB227B.html