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B.2 Query Structure Overview<br />
Numonyx <strong>Wireless</strong> <strong>Flash</strong> <strong>Memory</strong> (<strong>W30</strong>) (<strong>W30</strong>)<br />
Table 33: Example of Query Structure Output of x16- and x8 <strong>Flash</strong> Devices<br />
The Query command causes the flash device to display the Common <strong>Flash</strong> Interface<br />
(CFI) Query structure or database. Table 34 summarizes the structure sub-sections and<br />
address locations.<br />
Table 34: Query Structure<br />
Word Addressing: Byte Addressing:<br />
Offset Hex Code Value Offset Hex Code Value<br />
AX —A0 D15 —D0 AX —A0 D7 —D0 00010h 0051 “Q” 00010h 51 Q<br />
00011h 0052 “R” 00011h 52 R<br />
00012h 0059 “Y” 00012h 59 Y<br />
00013h P IDLO PrVendor 00013h P IDLO PrVendor<br />
00014h P IDHI ID # 00014h P IDLO ID #<br />
00015h PLO PrVendor 00015h P IDHI ID #<br />
00016h PHI TblAdr 00016h ... ...<br />
00017h A IDLO AltVendor 00017h<br />
00018h A IDHI ID # 00018h<br />
... ... ... ...<br />
Offset Sub-Section Name Description<br />
Notes:<br />
1. Refer to the Section B.1, “Query Structure Output” on page 89 and offset 28h, for the detailed definition of<br />
the offset address as a function of the flash device bus width and mode.<br />
2. BA = Block Address beginning location (for example, 08000h is the block 1’beginning location when the block size is 32Kword).<br />
3. Offset 15 defines P, which points to the Primary Numonyx-specific Extended Query Table.<br />
(1)<br />
00000h Manufacturer Code<br />
00001h Device Code<br />
(BA+2)h (2) Block Status register Block-specific information<br />
00004-Fh Reserved Reserved for vendor-specific information<br />
00010h CFI query identification string Command set ID and vendor data offset<br />
0001Bh System interface information Device timing & voltage information<br />
00027h Device geometry definition <strong>Flash</strong> device layout<br />
P (3) Vendor-defined additional information specific<br />
Primary Intel-specific Extended Query Table<br />
to the Primary Vendor Algorithm<br />
B.3 Block Status Register<br />
The Block Status Register indicates whether an erase operation completed successfully,<br />
a given block is locked, or a given block can be accessed for flash memory program/<br />
erase operations.<br />
Block Erase Status (BSR.1) allows system software to determine the success of the last<br />
block erase operation. Use BSR.1 just after power-up to verify that the VCC supply was<br />
not accidentally removed during an erase operation.<br />
Datasheet November 2007<br />
90 Order Number: 290702-13
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