R
Platform Flash XL High-Density Configuration and Storage Device
Next Protection Status(1) (WP, DQ1, DQ0)
Table 18: Lock Status
Current Protection Status(1) (WP, DQ1, DQ0)
Program/Erase
Allowed
After Block Lock After Block Unlock After Block Lock-
After WP
Transition
Current State
Command
Command
Down Command
1,0,0
1,0,1(2)
1,1,0
9
–
1,0,1
1,0,0
1,1,1
1,1,1
1,1,1
1,1,1
0,1,1
0,1,1
0,1,1
0,0,0
0,0,1
1,0,1
1,0,0
9
–
1,1,1
1,1,0
0,1,1
1,1,1
1,1,1
1,1,0
0,1,1
0,0,0
9
–
0,0,1
0,0,0
1,0,0
0,0,1(2)
0,1,1
0,0,1
0,0,0
1,0,1
–
0,1,1
0,1,1
1,1,1 or 1,1,0(3)
Notes:
1. The lock status is defined by the write protect pin and by DQ1 (‘1’ for a locked-down block) and DQ0 (‘1’ for a locked block) as read in the
Read Electronic Signature command with DQ1 = V and DQ0 = V .
IH
IL
2. All blocks are locked at power-up, so the default configuration is 001 or 101 according to WP status.
3. A WP transition to V on a locked block will restore the previous DQ0 value, giving a 111or 110.
IH
DS617 (v3.0.1) January 07, 2010
www.xilinx.com
Product Specification
36
XILINX [ XILINX, INC ]
