1. CRC Check CRCCHECK

1.1. Instruction Description#

Addr (starting address): Store the data when calculate the CRC check code in an area starting from Dn, and this operand can only be selected from the D data register;
Len (data length): In bytes, one D register occupies 2 bytes, with the lower bits before the higher bits.
Mode (CRC Check Mode): Different types of CRC checks can be selected.
Res (result): As the output result, if the verification passes, the output is ON, and if it does not pass, the output is OFF.

Name	Number	Polynomial	Check Code Length
CRC-16	K0	X16+X15+X2+1	2 bytes
CRC-12	K1	X12+X11+X3+X2+X+1	2 bytes
CRC-8	K2	X8+X2+X+1	1 byte
CRC-CCITT	K3	X16+X12+X5+1	2 bytes
CRC-32	K4	X32+X26+X23+X22+X16+X12+X11+X10+X8+X7+X5+X4+X2+X+1	4 bytes
CRC-32C	K5	X32+X28+X27+X26+X25+X23+X22+X20+X19+X18+X14+X13+X11+X10+X9+X8+X6+1	4 bytes

Input/Output	Data Type	operand	Description

Instruction table:

NETWORK 000

LD M0

MOV H3412 D0

MOV H7856 D1

MOV H107B D2

CRCCHECK D0 K6 K0 M1

POP

图1 CRCCHECK