XC3S100E-4CP132GI XILINX [Xilinx, Inc], XC3S100E-4CP132GI Datasheet - Page 43

• Manufacturer Part Number: XC3S100E-4CP132GI
• Description: Spartan-3E FPGA Family: Complete Data Sheet
• Manufacturer: XILINX [Xilinx, Inc]

Setting the WRITE_MODE attribute to a value of
NO_CHANGE, puts the DO outputs in a latched state when
asserting WE. Under this condition, the DO outputs retain
DS312-2 (v3.4) November 9, 2006
Product Specification
R
Figure 35: Waveforms of Block RAM Data Operations with NO_CHANGE Selected
ADDR
Data_in
CLK
WE
DO
EN
DI
DISABLED
0000
DI
Internal
Memory
XXXX
aa
READ
MEM(aa)
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DO
bb
MEM(bb)=1111
1111
WRITE
the data driven just before WE is asserted. NO_CHANGE
timing is shown in the portion of
is High.
No change during write
2222
cc
MEM(cc)=2222
WRITE
dd
DS312-2_07_020905
XXXX
READ
MEM(dd)
Figure 35
Functional Description
during which WE
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