XC3SD3400A-4FGG676C Datasheet, PDF (24/101 Pages) Xilinx, Inc – Spartan-3A DSP FPGA Family Data Sheet

Spartan-3A DSP FPGA Family: DC and Switching Characteristics
Input Propagation Times
Table 21: Propagation Times for the IOB Input Path
Symbol
Description
Conditions
Propagation Times
T_IOPI
The time it takes for data to travel from LVCMOS25⁽²⁾
the Input pin to the I output with no input
delay programmed
T_IOPID
The time it takes for data to travel from LVCMOS25⁽²⁾
the Input pin to the I output with the input
delay programmed
DELAY_VALUE
Device
Speed
Grade
-5 -4
Units
Max Max
XC3SD1800A 0.51 0.53 ns
IBUF_DELAY_VALUE=0
XC3SD3400A 0.73 0.93 ns
1
XC3SD1800A 1.29 1.62 ns
2
1.67 2.08 ns
3
1.92 2.36 ns
4
2.38 2.89 ns
5
2.61 3.17 ns
6
2.98 3.55 ns
7
3.30 3.92 ns
8
3.63 4.37 ns
9
3.31 4.02 ns
10
3.69 4.47 ns
11
3.94 4.77 ns
12
4.41 5.27 ns
13
4.67 5.56 ns
14
5.03 5.94 ns
15
5.36 6.31 ns
16
5.64 6.73 ns
1
XC3SD3400A 1.56 1.99 ns
2
1.92 2.44 ns
3
2.18 2.72 ns
4
2.66 3.19 ns
5
2.91 3.43 ns
6
3.27 3.81 ns
7
3.59 4.17 ns
8
3.87 4.58 ns
9
3.52 4.22 ns
10
3.87 4.65 ns
11
4.14 4.94 ns
12
4.68 5.40 ns
13
4.93 5.66 ns
14
5.29 6.06 ns
15
5.61 6.43 ns
16
5.88 6.80 ns
DS610 (v3.0) October 4, 2010
www.xilinx.com
Product Specification
24