Inventors:
- San Jose CA, US
Seyhan KARAKULAK - San Diego CA, US
Scott KAYSER - San Diego CA, US
Majid NEMATI ANARAKI - San Diego CA, US
Anthony Dwayne WEATHERS - San Diego CA, US
Assignee:
Western Digital Technologies, Inc. - San Jose CA
International Classification:
G06F 11/10
G11C 29/52
H03M 13/29
H03M 13/37
Abstract:
The subject technology provides for scanning blocks of a flash memory device for erased pages. A first codeword read from a page of a block in a flash memory device is received and provided to a first decoder for decoding. In response to receiving a first success indicator from the first decoder indicating that the first codeword was successfully decoded, first decoded data is provided from the first decoder to a second decoder for verification of the first decoded data. In response to receiving a first failure indicator from the second decoder indicating that the first decoded data was not verified, the page of the block is identified as being in an erased state based on the first success indicator received from the first decoder and the first failure indicator received from the second decoder.