XC3S400AN-4FTG256I Xilinx Inc, XC3S400AN-4FTG256I Datasheet - Page 58

• Manufacturer Part Number: XC3S400AN-4FTG256I
• Description: IC FPGA SPARTAN-3AN 256FTBGA
• Manufacturer: Xilinx Inc
• Series: Spartan™-3ANr

Specifications of XC3S400AN-4FTG256I

• Number Of Logic Elements/cells: 8064
• Number Of Labs/clbs: 896
• Total Ram Bits: 368640
• Number Of I /o: 195
• Number Of Gates: 400000
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 256-LBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Chapter 5: Erase Commands
58
Sector Addressing
Default Addressing Mode
•
The addressing to access a sector depends on the address mode.
•
•
Furthermore,
Spartan-3AN FPGA and also indicate where the FPGA configuration bitstream is stored.
Also see
Table 5-10
into two subsectors, designated as Sector 0a and Sector 0b. These subsectors require
additional address bits.
♦
♦
♦
♦
Drive CSB High on the falling edge of CLK to end the command.
“Default Addressing Mode,” page 58
“Optional Power-of-2 Addressing Mode,” page 87
The page address and byte address bits, which follow the Sector Address, specify
any valid address location within the sector which is to be erased.
If using the default address scheme, see
If using power-of-2 addressing, see
When erasing a sector, be aware of how the FPGA bitstream is stored within the
ISF memory. There is always one bitstream stored starting at Sector 0, as indicated
in blue in
second FPGA bitstream is stored starting on the next sector boundary, following
the first bitstream. The optional MultiBoot bitstream is shown in yellow in
Table 5-11
“Memory Allocation Tables,” page
shows the sector addressing for default addressing mode. Sector 0 is subdivided
Table 5-11
Table 5-11
and
Table 5-12, page
and
www.xilinx.com
and
Table 5-12, page 60
Table 5-12, page
60.
Spartan-3AN FPGA In-System Flash User Guide
Table A-6, page 90
20.
summarize the sector addresses for each
Table 5-10
60. If using MultiBoot configuration, a
.
.
UG333 (v2.1) January 15, 2009
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