Datasheet

CRC_CTRL = CRC_CTRL_WAS_MASK; // 16-bit CRC, ready to dummy seed
CRC_P2P3 = 0x1021; // Standard CCITT polynomail of (x^16 + x^12 + x^5 + 1)
CRC_D2D3 = 0xFFFF; // Set seed by 0xFFFF
CRC_CTRL = 0x00;
for ( i = 0 ; i < 128 ; i++ )
{
CRC_D3 = 'A'; // Dummy 256 `A'
CRC_D3 = 'A';
}
// Get 0xea0b in CRC_D2:CRC_D3 here
Functional description
MC9S08PA60 Reference Manual, Rev. 1, 9/2012
574 Freescale Semiconductor, Inc.