Document Number: 002-13915 Rev. *C Page 14 of 21
10. Device ID and Common Flash Interface (ID-CFI) ASO Map
The Device ID portion of the ASO (word locations 0h to 0Fh) provides manufacturer ID, device ID, Sector Protection State, and basic
feature set information for the device.
ID-CFI Location 02h displays sector protection status for the sector selected by the sector address (SA) used in the ID-CFI enter
command. To read the protection status of more than one sector it is necessary to exit the ID ASO and enter the ID ASO using the
new SA. The access time to read location 02h is always t
ACC
and a read of this location requires CE# to go High before the read and
return Low to initiate the read (asynchronous read access). Page mode read between location 02h and other ID locations is not
supported. Page mode read between ID locations other than 02h is supported.
Table 12. ID (Autoselect) Address Map
Description Address (x16) Address (x8) Read Data
Manufacture ID (SA) + 0000h (SA) + 0000h 0001h
Device ID (SA) + 0001h (SA) + 0002h 227Eh
Protection Verification (SA) + 0002h (SA) + 0004h
Sector Protection State (1= Sector protected, 0= Sector unprotected). To read a different SA
protection state only a new SA needs to be given.
Indicator Bits (SA) + 0003h (SA) + 0006h
For S70GL02Gt highest address sector protect: XX3Fh = Not Factory Locked
XXBFh = Factory Locked
For S70GL02GT lowest address sector protect: XX2Fh = Not Factory Locked
XXAFh = Factory Locked
DQ15-DQ08 = 1 (Reserved)
DQ7 - Factory Locked Secure Silicon Region
1 = Locked
0 = Not Locked
DQ6 - Customer Locked Secure Silicon Region
1 = Locked
0 = Not Locked
DQ5 = 1 (Reserved)
DQ4 - WP# Protects
0 = lowest address Sector
1 = highest address Sector
DQ3 - DQ0 = 1 (Reserved)
RFU
(SA) + 0004h (SA) + 0008h Reserved
(SA) + 0005h (SA) + 000Ah Reserved
(SA) + 0006h (SA) + 000Ch Reserved
(SA) + 0007h (SA) + 000Eh Reserved
(SA) + 0008h (SA) + 0010h Reserved
(SA) + 0009h (SA) + 0012h Reserved
(SA) + 000Ah (SA) + 0014h Reserved
(SA) + 000Bh (SA) + 0016h Reserved
Lower Software Bits (SA) + 000Ch (SA) + 0018h
Bit 0 - Status Register Support
1 = Status Register Supported
0 = Status Register not supported
Bit 1 - DQ polling Support
1 = DQ bits polling supported
0 = DQ bits polling not supported
Bit 3-2 - Command Set Support
11 = reserved
10 = reserved
01 = Reduced Command Set
00 = Classic Command set
Bits 4-15 - Reserved = 0
Upper Software Bits (SA) + 000Dh (SA) + 001Ah Reserved
Device ID (SA) + 000Eh (SA) + 001Ch 2248h = 2 Gb
Device ID (SA) + 000Fh (SA) + 000Eh 2201h