AN0545V2 - NAND Design

2023年10月13日 — x, 2023.1 kernel and U-Boot versions, the Bad Block Table (BBT) produced by NAND is different when comparing the U-Boot and the Linux kernel.

2008年10月9日 — NAND Flash首次被啟用時，制控IC的故障區塊管理程式會逐一檢查NAND Flash內每個區塊，若有發現故障區塊，便將之記錄至故障區塊表(Bad Block Table；BBT) ...

2017年9月25日 — Additionally, Bad Block Management(BBM) is a must-have to provide data storage integrity of NAND. Flash and to maintain the Bad Block Table(BBT) ...

Per device. The bad block table contains all bad block information of the device which can consist of multiple chips. · Per chip. A bad block table is used per ...

The bad block information store on the NAND is what we called the BBT(Bad Block Table). 3) When run-time bad block happen, update BBT on the NAND flash.

2010年10月18日 — The bad block table blocks are located somewhere within the last four blocks of NAND FLASH. Only two blocks would be necessary in the absence of ...

2021年5月13日 — The BBT consists of two bits per block which distinguish the three conditions (factory-bad/worn-out/good). Both u-boot ...

* marked good / bad blocks. This information is used to create a memory BBT. * Once a new bad block is discovered then the factory information is updated.

故障區塊管理(Bad Block Management)可偵測及標記出快閃記憶體中的壞塊，並事先預留備用區塊。