NAND01G-B2C datasheet(35/67 Pages) NUMONYX

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NAND01G-B2C

Device operations

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Figure 16.

Read ONFI signature waveforms

6.10

Read parameter page

The Read Parameter Page command retrieves the data structure that describes the NAND

flash organization, features, timings and other behavioral parameters. This data structure

enables the host processor to automatically recognize the NAND flash configuration of a

device. The whole data structure is repeated at least five times.

See Figure 17 for a description of the read parameter page waveforms.

The Random Data Read command can be issued during execution of the read parameter

page to read specific portions of the parameter page.

The Read Status command may be used to check the status of read parameter page during

execution. After completion of the Read Status command, 00h is issued by the host on the

command line to continue with the data output flow for the Read Parameter Page command.

Read status enhanced is not be used during execution of the Read Parameter Page

command.

Table 16 defines the parameter page data structure. For parameters that span multiple

bytes, the least significant byte of the parameter corresponds to the first byte.

Values are reported in the parameter page in bytes when referring to items related to the

size of data access (as in an x8 data access device). For example, the chip returns how

many data bytes are in a page. For a device that supports x16 data access, the host is

required to convert byte values to word values for its use. Unused fields are set to 0h.

For more detailed information about parameter page data bits, refer to ONFI Specification

1.0 section 5.4.1.

90h

20h

I/O

tRLQV

Read Electronic

Signature

command

1st cycle

address

ai13178b

(Read ES access time)

tALLRL1

49h

46h

4Fh

4Eh

XXh

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