XC3S1400AN-4FGG484C Xilinx Inc, XC3S1400AN-4FGG484C Datasheet - Page 81

• Manufacturer Part Number: XC3S1400AN-4FGG484C
• Description: IC FPGA SPARTAN-3AN 484FPGA
• Manufacturer: Xilinx Inc
• Series: Spartan™-3ANr

Specifications of XC3S1400AN-4FGG484C

• Number Of Logic Elements/cells: 25344
• Number Of Labs/clbs: 2816
• Total Ram Bits: 589824
• Number Of I /o: 372
• Number Of Gates: 1400000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-BBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Spartan-3AN FPGA In-System Flash User Guide
UG333 (v2.1) January 15, 2009
Sector Lockdown Register
R
shown in
this time, the
Lockdown Program operation is in progress or whether it has completed.
If the FPGA V
completes, then the content of the
interrupted, read the Sector Lockdown Register to determine if it was programmed
correctly. If no, reissue the Sector Lockdown Program command, if necessary.
The nonvolatile Sector Lockdown Register indicates which sectors are open and which are
permanently locked down. The Sector Lockdown Register contains between four to 16
bytes of data, depending on the specific Spartan-3AN FPGA as shown in
Sector Lockdown status byte location directly corresponds to the associated ISF memory
sector. For example, status byte 1 corresponds to the lockdown status of Sector 1, etc.
The specification for Sector 0 differs from the other sectors because Sector 0 is actually sub-
divided into two smaller sectors of different sizes. The byte-level description for the Sector
0 status appears in
The Lockdown Status for a specific sector is updated based on a
command. The Sector Lockdown Register is a read-only location and cannot be directly
modified.
Table 8-12: Sector Lockdown Register (Read-Only)
XC3S50AN
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
◆
◆
◆
◆
Table 4-5, page 44
Available Sectors
READY/BUSY
CCAUX
XC3S200AN
XC3S400AN
Table
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
power supply is interrupted before the programming operation
◆
◆
◆
◆
◆
◆
◆
◆
8-13.
www.xilinx.com
and specified in the
bit (bit 7) of the
XC3S1400AN
XC3S700AN
Sector Lockdown Register
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
◆
Status Register
Status Byte
Spartan-3AN FPGA data
0 (special)
Sector/
10
11
12
13
14
15
1
2
3
4
5
6
7
8
9
is not guaranteed. If power is
indicates whether the Sector
Sector Lockdown Program
LOCKED
0xFF
Lockdown Status
(see
Sector Lockdown
Table
Table
sheet. During
8-13)
8-12. The
OPEN
0x00
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