English
Language : 

XC4VLX15_08 Datasheet, PDF (22/56 Pages) Xilinx, Inc – Virtex-4 FPGA Data Sheet
◁
R
Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
Table 27: IOB Switching Characteristics(1,2) (Continued)
IOSTANDARD
Attribute(1)
HSTL_II_DCI (3)
HSTL_III_DCI(3)
HSTL_IV_DCI (3)
HSTL_I_DCI_18(3)
HSTL_II_DCI_18 (3)
HSTL_III_DCI_18(3)
HSTL_IV_DCI_18(3)
SSTL2_I_DCI(3)
SSTL2_II_DCI (3)
TIOPI
Speed Grade
-12
-11
-10
1.28
1.47
1.64
1.28
1.47
1.64
1.28
1.47
1.64
1.26
1.44
1.60
1.26
1.44
1.60
1.26
1.44
1.60
1.26
1.44
1.60
1.31
1.51
1.68
1.31
1.51
1.68
TIOOP
Speed Grade
-12
-11
-10
1.83
1.96
2.13
1.90
2.04
2.22
1.75
1.87
2.03
1.89
2.03
2.21
1.85
1.98
2.16
1.80
1.93
2.09
1.77
1.89
2.06
2.09
2.25
2.46
2.07
2.24
2.45
TIOTP
Speed Grade
-12
-11
-10
1.83
1.96
2.13
1.90
2.04
2.22
1.75
1.87
2.03
1.89
2.03
2.21
1.85
1.98
2.16
1.80
1.93
2.09
1.77
1.89
2.06
2.09
2.25
2.46
2.07
2.24
2.45
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
LVPECL_25
1.38
1.59
1.77
1.52
1.61
1.74
1.52
1.61
1.74
ns
SSTL18_I
1.31
1.51
1.68
2.15
2.33
2.54
2.15
2.33
2.54
ns
SSTL18_II
SSTL18_I_DCI(3)
SSTL18_II_DCI (3)
1.31
1.51
1.68
1.92
2.06
2.24
1.92
2.06
2.24
ns
1.31
1.51
1.68
1.97
2.12
2.32
1.97
2.12
2.32
ns
1.31
1.51
1.68
1.87
2.00
2.18
1.87
2.00
2.18
ns
Notes:
1. The I/O standard is selected in the Xilinx ISE® software tool using the IOSTANDARD attribute.
2. All I/O timing specifications are measured with VCCO at –5% from nominal.
3. The values of the DCI reference resistors must be within a 20Ω–100Ω range. Refer to UG070, Virtex-4 FPGA User Guide, for detailed information.
Table 28: IOB 3-state ON Output Switching Characteristics (TIOTPHZ)
TIOTPHZ
Symbol
Description
T input to Pad high-impedance
Speed Grade
-12
-11
-10
0.88
1.01
1.12
Units
ns
Ethernet MAC Switching Characteristics
Consult UG074: Virtex-4 FPGA Embedded Tri-mode Ethernet MAC User Guide for further information.
Table 29: Maximum Ethernet MAC Performance
Speed Grade
Description
-12
-11
-10
Ethernet MAC Maximum Performance
10/100/1000
Units
Mb/s
DS302 (v3.2) April 10, 2008
www.xilinx.com
Product Specification
22
 ▷