JS28F320J3F75 datasheet(59/67 Pages) NUMONYX

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Numonyx® Embedded Flash Memory (J3 65 nm) Single Bit per Cell (SBC)

Datasheet

13.2

Query Structure Overview

The Query command causes the flash component to display the Common Flash

Interface (CFI) Query structure or “database.” The structure sub-sections and address

locations are summarized below. See AP-646 Common Flash Interface (CFI) and

Command Sets

(order number 292204) for a full description of CFI.

The following sections describe the Query structure sub-sections in detail.

x8 mode

N/A(1)

21:

“Q”

22:

“R”

Note:

The system must drive the lowest order addresses to access all the device's array data when the device is configured in

x8 mode. Therefore, word addressing, where these lower addresses are not toggled by the system, is "Not Applicable"

for x8-configured devices.

Table 36: Example of Query Structure Output of a x16- and x8-Capable Device

Word Addressing

Byte Addressing

Offset

Hex Code

Value

Offset

Hex Code

Value

A15–A0

D15–D0

A7–A0

D7–D0

0010h

0051

“Q”

20h

“Q”

0011h

0052

“R”

21h

“Q”

0012h

0059

“Y”

22h

“R”

0013h

P_IDLO

PrVendor

23h

“R”

0014h

P_IDHI

ID #

24h

“Y”

0015h

PLO

PrVendor

25h

“Y”

0016h

PHI

TblAdr

26h

P_IDLO

PrVendor

0017h

A_IDLO

AltVendor

27h

P_IDLO

PrVendor

0018h

A_IDHI

ID #

28h

P_IDHI

ID #

...

Table 35: Summary of Query Structure Output as a Function of Device and Mode

Device

Type/

Mode

Query start location in

maximum device bus

width addresses

Query data with maximum device

bus width addressing

Query data with byte addressing

Hex

Offset

Hex Code

ASCII

Value

Hex

Offset

Hex Code

ASCII

Value

Table 37: Query Structure

Offset

Sub-Section Name

Description

Notes

00h

Identification Code

Manufacturer Code

01h

Identification Code

Device Code

(BA+2)h(2)

Block Status Register

Block-Specific Information

1,2

04-0Fh

Reserved

Reserved for Vendor-Specific Information

10h

CFI Query Identification String

Reserved for Vendor-Specific Information

1Bh

System Interface Information

Command Set ID and Vendor Data Offset

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