參數(shù)資料
型號(hào): XC4VFX100-10FF1517I
廠商: XILINX INC
元件分類: FPGA
英文描述: FPGA, 10544 CLBS, 1028 MHz, PBGA1517
封裝: FBGA-1517
文件頁數(shù): 16/58頁
文件大小: 1863K
代理商: XC4VFX100-10FF1517I
Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
DS302 (v3.7) September 9, 2009
Product Specification
23
I/O Standard Adjustment Measurement Methodology
Input Delay Measurements
Table 30 shows the test setup parameters used for measuring input delay.
Table 30: Input Delay Measurement Methodology
Description
I
/O Standard
Attribute
VL(1,2)
VH(1,2)
VMEAS
(1,4,5)
VREF
(1,3,5)
LVTTL (Low-Voltage Transistor-Transistor Logic)
LVTTL
0
3.0
1.4
LVCMOS (Low-Voltage CMOS), 3.3V
LVCMOS33
0
3.3
1.65
LVCMOS, 2.5V
LVCMOS25
0
2.5
1.25
LVCMOS, 1.8V
LVCMOS18
0
1.8
0.9
LVCMOS, 1.5V
LVCMOS15
0
1.5
0.75
PCI (Peripheral Component Interface),
33 MHz, 3.3V
PCI33_3
Per PCI Specification
PCI, 66 MHz, 3.3V
PCI66_3
Per PCI Specification
PCI-X, 133 MHz, 3.3V
PCIX
Per PCI-X Specification
GTL (Gunning Transceiver Logic)
GTL
VREF –0.2
VREF +0.2
VREF
0.80
GTL Plus
GTLP
VREF –0.2
VREF +0.2
VREF
1.0
HSTL (High-Speed Transceiver Logic),
Class I & II
HSTL_I, HSTL_II
VREF –0.5
VREF +0.5
VREF
0.75
HSTL, Class III & IV
HSTL_III, HSTL_IV
VREF –0.5
VREF +0.5
VREF
0.90
HSTL, Class I & II, 1.8V
HSTL_I_18, HSTL_II_18
VREF –0.5
VREF +0.5
VREF
0.90
HSTL, Class III & IV, 1.8V
HSTL_III_18,
HSTL_IV_18
VREF –0.5
VREF +0.5
VREF
1.08
SSTL (Stub Terminated Transceiver Logic),
Class I & II, 3.3V
SSTL3_I, SSTL3_II
VREF –1.00
VREF +1.00
VREF
1.5
SSTL, Class I & II, 2.5V
SSTL2_I, SSTL2_II
VREF –0.75
VREF +0.75
VREF
1.25
SSTL, Class I & II, 1.8V
SSTL18_I, SSTL18_II
VREF –0.5
VREF +0.5
VREF
0.90
AGP-2X/AGP (Accelerated Graphics Port)
AGP
VREF
(0.2 xVCCO)
VREF +
(0.2 xVCCO)
VREF
AGP
Spec
LVDS (Low-Voltage Differential Signaling), 2.5V
LVDS_25
1.2 – 0.125
1.2 + 0.125
1.2
LVDSEXT (LVDS Extended Mode), 2.5V
LVDSEXT_25
1.2 – 0.125
1.2 + 0.125
1.2
ULVDS (Ultra LVDS), 2.5V
ULVDS_25
0.6 – 0.125
0.6 + 0.125
0.6
LDT (HyperTransport), 2.5V
LDT_25
0.6 – 0.125
0.6 + 0.125
0.6
Notes:
1.
Input delay measurement methodology parameters for LVDCI and HSLVDCI are the same as for LVCMOS standards of the same voltage.
Parameters for all other DCI standards are the same as for the corresponding non-DCI standards.
2.
Input waveform switches between VLand VH.
3.
Measurements are made at typical, minimum, and maximum VREF values. Reported delays reflect worst case of these measurements. VREF values
listed are typical.
4.
Input voltage level from which measurement starts.
5.
This is an input voltage reference that bears no relation to the VREF / VMEAS parameters found in IBIS models and/or noted in Figure 4.
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