Abov A96G166 User Manual

16. CRC A96G166/A96A166/A96S166 User’s manual
162
16 CRC
Using the CRC, it can be monitor the memory of the specified area. This is a one-time operation, and
reset is required for continuous operation. In CRC MNT mode, when the CRC read is finished,
CRC_FLAG occurs. In CRC validate mode, if the CRC validate fail after the CRC reading is finished,
CRC_FLAG occurs. CRC_FAIL indicates the status of validate results when the CRC read is finished.
If the CRC_FLAG is generated and the interrupt is enabled, interrupt service routine is served. CRC-
FLAG is not cleared by hardware. CRC-TYPE 0~3 are not supported. Validate is done by comparing
the CRC_MNT register and the CRC register value. CRC are not automatically initialized, you need to
calculate a new CRC after CRC_H, CRC_L Clear.
Table 30. CRC mode
CRC TYPE
CRC mode
CRC input
Condition of CRC_FLAG
Condition of CRC reset
CRC_TYPE = 4
MNT
Flash Data
After CRC reading
-
CRC_TYPE = 6
Validate
Flash Data
After CRC reading &
Validate fail
Validate fail
16.1 Block Diagram
CRC_TYPE[2:0]
FLASH
CRC calculator
CRC_MNT
CRC_ADDR_START
CRC_ADDR_END
CRC
< FLASH >
CRC_FAIL
CRC Reset
RESET_EN
CRC_FLAG
CRC Interrupt
INT_EN
After CRC reading
CRC_EN
Clear CRC_EN
Match
...
ADDR_Counter
(CRC_ADDR_START ++)
CRC_ADDR_END
Match
4
6
Figure 81. CRC Block Diagram

Abov A96G166 Specifications

General

Brand	Abov
Model	A96G166
Category	Computer Hardware
Language	English