DS617 Datasheet, PDF (36/88 Pages) Xilinx, Inc – MultiBoot Bitstream, Design Revision Storage

R
Platform Flash XL High-Density Configuration and Storage Device
Table 18: Lock Status
Current Protection Status⁽¹⁾ (WP, DQ1, DQ0)
Current State
1,0,0
Program/Erase
Allowed
9
After Block Lock
Command
1,0,1
1,0,1⁽²⁾
–
1,1,0
9
1,0,1
1,1,1
1,1,1
–
1,1,1
0,0,0
9
0,0,1
0,0,1⁽²⁾
–
0,0,1
0,1,1
–
0,1,1
Next Protection Status⁽¹⁾ (WP, DQ1, DQ0)
After Block Unlock After Block Lock-
Command
Down Command
After WP
Transition
1,0,0
1,1,1
0,0,0
1,0,0
1,1,1
0,0,1
1,1,0
1,1,1
0,1,1
1,1,0
1,1,1
0,1,1
0,0,0
0,1,1
1,0,0
0,0,0
0,1,1
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_IH and DQ0 = V_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_IH on a locked block will restore the previous DQ0 value, giving a 111 or 110.
DS617 (v3.0.1) January 07, 2010
www.xilinx.com
Product Specification
36