Scanner Module Overview

The scanner allows segments of the Program Flash Memory or Data EEPROM to be read out (scanned) to the CRC peripheral. The scanner module interacts with the CRC module and supplies it data, one word at a time. Data is fetched from the address range defined by SCANLADR registers up to the SCANHADR registers. The scanner begins operation when the SGO bit is set and ends when either SGO is cleared by the user or when SCANLADR increments past SCANHADR. The SGO bit is also cleared when the EN bit in the CRCCON0 register is cleared.
Important: When using the scanner module in conjunction with the CRC module, the CRCEN and CRCGO bits must be set before setting the SGO bit.