CRC-16/CCITT (polynomial 0x1021)

Beginner

00:00

Specification

01General Operation

CRC-16/CCITT calculator using the polynomial x^16+x^12+x^5+1 (0x1021). On each rising edge, if i_valid='1', one bit is integrated into the CRC register.

Reset is synchronous and active-high (initial value: 0xFFFF).

Polynomial: 0x1021
Initial value: 0xFFFF

02Interface

i_clk

Direction: Input
Width: 1 bit
Description: System clock

i_rst

Direction: Input
Width: 1 bit
Description: Synchronous reset active high

i_data

Direction: Input
Width: 1 bit
Description: Serial data bit

i_valid

Direction: Input
Width: 1 bit
Description: Data valid

i_last

Direction: Input
Width: 1 bit
Description: Last bit (unused internally)

o_crc

Direction: Output
Width: 16 bits
Description: Current CRC value

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