256-Mbit J3 (x8/x16)
Table 23. 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
x16 device
x16 mode
10h
10:
11:
12:
0051
0052
0059
“Q”
“R”
“Y”
20:
21:
22:
20:
21:
22:
51
00
52
51
51
52
“Q”
“Null”
“R”
x16 device
x8 mode
“Q”
N/A(1)
N/A(1)
“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 24. Example of Query Structure Output of a x16- and x8-Capable Device
Word Addressing
Hex Code
Byte Addressing
Hex Code
Offset
–A
Value
Offset
Value
A
D15–D
A –A
D –D
7 0
15
0
0
7
0
0010h
0011h
0012h
0013h
0014h
0015h
0016h
0017h
0018h
...
0051
0052
0059
“Q”
“R”
20h
21h
22h
23h
24h
25h
26h
27h
28h
...
51
51
“Q”
“Q”
“Y”
52
“R”
P_ID
PrVendor
ID #
52
“R”
LO
P_ID
59
“Y”
HI
P
PrVendor
TblAdr
AltVendor
ID #
59
“Y”
LO
P
P_ID
P_ID
PrVendor
ID #
ID #
...
HI
LO
LO
A_ID
LO
A_ID
...
P_ID
...
HI
HI
...
A.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 commands.
The following sections describe the Query structure sub-sections in detail.
Datasheet
53
INTEL [ INTEL ]
