GET_CRC calculates the CRC of the buffer from the specified address to
the specified length, using the table look-up method. The CRC details are as follows:
CRC-CCITT, 16-bit
Polynomial: X^16+X^12+X^5+1, hex
0x00011021
Seed: 0xFFFF
MSB shifted in first
Note:
In the response, only the CRC LSb, 16 bits are valid.
The PE will automatically determine if the hardware CRC is available and
uses it by default. The hardware CRC is not used on PIC32MX1XX/2XX
devices.
Figure 17-20. Get CRC
(GET_CRC) Command
Table 17-12. Get CRC (GET_CRC) Format
Field
Description
Op code
0x8
Operand
Not used
Address
Address where to start calculating the CRC
Length
Length of buffer on which to calculate the CRC, in number of
bytes
Expected Response (2 words):Figure 17-21. Get CRC
(GET_CRC) Response
