S71GL032A Datasheet, PDF (40/102 Pages) SPANSION – Stacked Multi-Chip Product (MCP) Flash Memory and RAM

Advance Information
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, any time the device is ready to read array data.
The system can read CFI information at the addresses given in Table 18-Table 21.
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 18-Table 21. The system must write the
reset command to return the device to reading array data.
For further information, please refer to the CFI Specification and CFI Publication
100. Alternatively, contact your sales representative for copies of these
documents.
Addresses
(x16)
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
Table 18. 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)
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S71GL032A Based MCPs
S71GL032A_00_A0 March 31, 2005