AM29PL320D SPANSION [SPANSION], AM29PL320D Datasheet - Page 17

• Manufacturer Part Number: AM29PL320D
• Description: 32 Megabit (2 M x 16-Bit/1 M x 32-Bit) CMOS 3.0 Volt-only High Performance Page Mode Flash Memory
• Manufacturer: SPANSION [SPANSION]

COMMON FLASH MEMORY INTERFACE
(CFI)
The Common Flash Interface (CFI) specification out-
lines device and host system software interrogation
handshake, which allows specific vendor-specified
software algorithms to be used for entire families of de-
v i c e s. S o f tw a r e s u p p o r t ca n t h e n b e d ev i c e -
independent, JEDEC ID-independent, and forward-
and backward-compatible for the specified flash device
families. Flash vendors can standardize their existing
interfaces for long-term compatibility.
This device enters the CFI Query mode when the sys-
tem writes the CFI Query command, 98h, to address
55h in double word mode (or address AAh in word
mode), any time the device is ready to read array data.
October 2, 2003
Word Mode)
Addresses
(Double
1Ah
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
(Word Mode)
Addresses
2Ch
20h
22h
24h
26h
28h
2Ah
2Eh
30h
32h
34h
Table 9. CFI Query Identification String
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Data
Query Unique ASCII string “QRY”
Primary OEM Command Set
Address for Primary Extended Table
Alternate OEM Command Set (00h = none exists)
Address for Alternate OEM Extended Table (00h = none exists)
Am29PL320D
The system can read CFI information at the addresses
given in Tables 9–12. To terminate reading CFI data,
the system must write the reset command.
The system can also write the CFI query command
when the device is in the autoselect mode. The device
enters the CFI query mode, and the system can read
CFI data at the addresses given in Tables 9–12. The
system must write the reset command to return the de-
vice to the autoselect mode.
For further information, please refer to the CFI Specifi-
cation and CFI Publication 100, available via the World
Wide Web at http://www.amd.com/flash/cfi. Alterna-
tively, contact an AMD representative for copies of
these documents.
Description
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