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AM29LV160M View Datasheet(PDF) - Advanced Micro Devices

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AM29LV160M Datasheet PDF : 63 Pages
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Data Sheet
Common Flash Memory Interface (CFI)
The Common Flash Interface (CFI) specification outlines device and host system
software interrogation handshake, which allows specific vendor-specified soft-
ware algorithms to be used for entire families of devices. Software support can
then be device-independent, JEDEC ID-independent, and forward- and back-
ward-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 system writes the CFI Query
command, 98h, to address 55h in word mode (or address AAh in byte mode), any
time the device is ready to read array data. The system can read CFI information
at the addresses given in Table 6, on page 20 to Table 9, on page 22. In word
mode, the upper address bits (A7–MSB) must be all zeros. 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 au-
toselect mode. The device enters the CFI query mode, and the system can read
CFI data at the addresses given in Table 6, on page 20 to Table 9, on page 22.
The system must write the reset command to return the device to the read/reset
mode.
For further information, please refer to the CFI Specification and CFI Publication
100, available online at http://www.amd.com/flash/cfi. Alternatively, contact an
sales office or representative for copies of these documents.
Addresses
(Word Mode)
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
Addresses
(Byte Mode)
20h
22h
24h
26h
28h
2Ah
2Ch
2Eh
30h
32h
34h
Table 6. CFI Query Identification String
Data
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Description
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)
20
Am29LV160M
25974B5 January 31, 2007
 

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