Numonyx® Embedded Flash Memory (J3 65 nm) Single Bit per Cell (SBC)
Table 35: Summary of Query Structure Output as a Function of Device and Mode
Query data with maximum device
Query data with byte addressing
bus width addressing
Device
Type/
Mode
Query start location in
maximum device bus
width addresses
Hex
Offset
ASCII
Value
Hex
Offset
ASCII
Value
Hex Code
Hex Code
x8 mode
N/A(1)
N/A(1)
21:
22:
51
52
“Q”
“R”
Note:
1.
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
Hex Code
Byte Addressing
Hex Code
Offset
Value
Offset
A7–A0
Value
A15–A0
D15–D0
D7–D0
0010h
0011h
0012h
0013h
0014h
0015h
0016h
0017h
0018h
...
0051
0052
0059
P_IDLO
P_IDHI
PLO
“Q”
“R”
20h
21h
22h
23h
24h
25h
26h
27h
28h
...
51
51
“Q”
“Q”
“Y”
52
“R”
PrVendor
ID #
52
“R”
59
“Y”
PrVendor
TblAdr
AltVendor
ID #
59
“Y”
PHI
P_IDLO
P_IDLO
P_IDHI
...
PrVendor
PrVendor
ID #
...
A_IDLO
A_IDHI
...
...
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.
Table 37: Query Structure
Offset
Sub-Section Name
Description
Notes
00h
01h
Identification Code
Manufacturer Code
Device Code
1
1
Identification Code
(BA+2)h(2)
04-0Fh
10h
Block Status Register
Reserved
Block-Specific Information
1,2
1
Reserved for Vendor-Specific Information
Reserved for Vendor-Specific Information
Command Set ID and Vendor Data Offset
CFI Query Identification String
System Interface Information
1
1Bh
1
Datasheet
58
Jan 2011
208032-03
MICRON [ MICRON TECHNOLOGY ]
