DS031 Datasheet, PDF (62/318 Pages) Xilinx, Inc – Summary of Features

R
Virtex-II Platform FPGAs: DC and Switching Characteristics
IOB Output Switching Characteristics Standard Adjustments
Table 17 gives all standard-specific adjustments for output delays terminating at pads, based on standard capacitive load,
C_REF. Output delays terminating at a pad are specified for LVTTL with 12 mA drive and fast slew rate. For other standards,
adjust the delays by the values shown.
Table 17: IOB Output Switching Characteristics Standard Adjustments
Description
IOSTANDARD
Attribute
Timing
Parameter
Speed Grade
-6
-5
-4
Units
LVTTL (Low-Voltage Transistor-Transistor Logic), Slow, 2 mA
LVTTL_S2
T_{OLVTTL_S2}
9.42 9.71 10.68 ns
LVTTL, Slow, 4 mA
LVTTL_S4
T_{OLVTTL_S4}
5.77 5.95 6.55 ns
LVTTL, Slow, 6 mA
LVTTL_S6
T_{OLVTTL_S6}
4.11 4.24 4.66 ns
LVTTL, Slow, 8 mA
LVTTL_S8
T_{OLVTTL_S8}
2.87 2.96 3.26 ns
LVTTL, Slow, 12 mA
LVTTL_S12
T_{OLVTTL_S12}
2.32 2.39 2.63 ns
LVTTL, Slow, 16 mA
LVTTL_S16
T_{OLVTTL_S16}
1.70 1.75 1.93 ns
LVTTL, Slow, 24 mA
LVTTL_S24
T_{OLVTTL_S24}
1.26 1.30 1.43 ns
LVTTL, Fast, 2 mA
LVTTL_F2
T_{OLVTTL_F2}
6.52 6.72 7.39 ns
LVTTL, Fast, 4 mA
LVTTL_F4
T_{OLVTTL_F4}
2.80 2.88 3.17 ns
LVTTL, Fast, 6 mA
LVTTL_F6
T_{OLVTTL_F6}
1.57 1.62 1.78 ns
LVTTL, Fast, 8 mA
LVTTL_F8
T_{OLVTTL_F8}
0.46 0.48 0.52 ns
LVTTL, Fast, 12 mA
LVTTL_F12
T_{OLVTTL_F12}
0.00 0.00 0.00 ns
LVTTL, Fast, 16 mA
LVTTL_F16
T_{OLVTTL_F16}
–0.13 –0.14 –0.15 ns
LVTTL, Fast, 24 mA
LVTTL_F24
T_{OLVTTL_F24}
–0.22 –0.23 –0.26 ns
LVCMOS (Low-Voltage CMOS), 3.3V, Slow, 2 mA
LVCMOS33_S2
T_{OLVCMOS33_S2} 7.67 7.91 8.70
ns
LVCMOS, 3.3V, Slow, 4 mA
LVCMOS33_S4
T_{OLVCMOS33_S4} 4.37 4.50 4.95
ns
LVCMOS, 3.3V, Slow, 6 mA
LVCMOS33_S6
T_{OLVCMOS33_S6} 3.34 3.44 3.78
ns
LVCMOS, 3.3V, Slow, 8 mA
LVCMOS33_S8
T_{OLVCMOS33_S8} 2.29 2.36 2.60
ns
LVCMOS, 3.3V, Slow, 12 mA
LVCMOS33_S12 T_{OLVCMOS33_S12} 1.91 1.97 2.16
ns
LVCMOS, 3.3V, Slow, 16 mA
LVCMOS33_S16 T_{OLVCMOS33_S16} 1.24 1.27 1.40
ns
LVCMOS, 3.3V, Slow, 24 mA
LVCMOS33_S24 T_{OLVCMOS33_S24} 1.18 1.22 1.34
ns
LVCMOS, 3.3V, Fast, 2 mA
LVCMOS33_F2
T_{OLVCMOS33_F2} 5.82 6.00 6.60
ns
LVCMOS, 3.3V, Fast, 4 mA
LVCMOS33_F4
T_{OLVCMOS33_F4} 2.48 2.55 2.81
ns
LVCMOS, 3.3V, Fast, 6 mA
LVCMOS33_F6
T_{OLVCMOS33_F6} 1.28 1.31 1.45
ns
LVCMOS, 3.3V, Fast, 8 mA
LVCMOS33_F8
T_{OLVCMOS33_F8} 0.48 0.49 0.54
ns
LVCMOS, 3.3V, Fast, 12 mA
LVCMOS33_F12 T_{OLVCMOS33_F12} 0.27 0.28 0.31
ns
LVCMOS, 3.3V, Fast, 16 mA
LVCMOS33_F16 T_{OLVCMOS33_F16} –0.14 –0.14 –0.15 ns
LVCMOS, 3.3V, Fast, 24 mA
LVCMOS33_F24 T_{OLVCMOS33_F24} –0.21 –0.21 –0.23 ns
LVCMOS, 2.5V, Slow, 2 mA
LVCMOS25_S2
T_{OLVCMOS25_S2} 9.11 9.39 10.33 ns
LVCMOS, 2.5V, Slow, 4 mA
LVCMOS25_S4
T_{OLVCMOS25_S4} 5.00 5.16 5.67
ns
LVCMOS, 2.5V, Slow, 6 mA
LVCMOS25_S6
T_{OLVCMOS25_S6} 4.53 4.67 5.13
ns
LVCMOS, 2.5V, Slow, 8 mA
LVCMOS25_S8
T_{OLVCMOS25_S8} 3.86 3.98 4.38
ns
LVCMOS, 2.5V, Slow, 12 mA
LVCMOS25_S12 T_{OLVCMOS25_S12} 2.84 2.93 3.22
ns
LVCMOS, 2.5V, Slow, 16 mA
LVCMOS25_S16 T_{OLVCMOS25_S16} 2.36 2.43 2.67
ns
LVCMOS, 2.5V, Slow, 24 mA
LVCMOS25_S24 T_{OLVCMOS25_S24} 2.00 2.06 2.27
ns
LVCMOS, 2.5V, Fast, 2 mA
LVCMOS25_F2
T_{OLVCMOS25_F2} 4.06 4.18 4.60
ns
LVCMOS, 2.5V, Fast, 4 mA
LVCMOS25_F4
T_{OLVCMOS25_F4} 1.15 1.18 1.30
ns
LVCMOS, 2.5V, Fast, 6 mA
LVCMOS25_F6
T_{OLVCMOS25_F6} 0.72 0.74 0.81
ns
LVCMOS, 2.5V, Fast, 8 mA
LVCMOS25_F8
T_{OLVCMOS25_F8} 0.33 0.34 0.37
ns
LVCMOS, 2.5V, Fast, 12 mA
LVCMOS25_F12 T_{OLVCMOS25_F12} 0.02 0.02 0.03
ns
DS031-3 (v3.5) November 5, 2007
Product Specification
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