W25N01GVZEIT-TR Datasheet, PDF (33/68 Pages) Winbond – 3V 1G-BIT SERIAL SLC NAND FLASH MEMORY WITH DUAL/QUAD SPI BUFFER READ & CONTINUOUS READ

W25N01GVxxIG/IT
8.2.8 Read BBM Look Up Table (A5h)
The internal Look Up Table (LUT) consists of 20 Logical-Physical memory block links (from LBA0/PBA0 to
LBA19/PBA19). The “Read BBM Look Up Table” command can be used to check the existing address links
stored inside the LUT.
The “Read BBM Look Up Table” command is initiated by shifting the instruction code “A5h” into the DI pin
and followed by 8-bit dummy clocks, at the falling edge of the 16^th clocks, the device will start to output the
16-bit “Logical Block Address” and the 16-bit “Physical Block Address” as illustrated in Figure 12. All block
address links will be output sequentially starting from the first link (LBA0 & PBA0) in the LUT. If there are
available links that are unused, the output will contain all “00h” data.
The MSB bits LBA[15:14] of each link are used to indicate the status of the link.
LBA[15] LBA[14]
(Enable) (Invalid)
Descriptions
0
0
This link is available to use.
1
0
This link is enabled and it is a valid link.
1
1
This link was enabled, but it is not valid any more.
0
1
Not applicable.
Figure 12. Read BBM Look Up Table Instruction
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Publication Release Date: March 21, 2016
Revision G