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| 型号： | XC4VFX100-11FFG1517I |
| 厂商： | XILINX INC |
| 元件分类： | FPGA |
| 英文描述： | FPGA, 10544 CLBS, 1181 MHz, PBGA1517 |
| 封装： | LEAD FREE, FBGA-1517 |
| 文件页数： | 17/58页 |
| 文件大小： | 1863K |
| 代理商： | XC4VFX100-11FFG1517I |
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Virtex-4 FPGA Data Sheet: DC and Switching Characteristics
DS302 (v3.7) September 9, 2009
Product Specification
24
Output Delay Measurements
Output delays are measured using a Tektronix P6245
TDS500/600 probe (< 1 pF) across approximately 4 inches
of FR4 microstrip trace. Standard termination was used for
all testing. The propagation delay of the 4 inch trace is char-
acterized separately and subtracted from the final measure-
ment, and is therefore not included in the generalized test
setup shown in Figure 4.
Measurements and test conditions are reflected in the IBIS
models except where the IBIS format precludes it. Parame-
ters VREF, RREF, CREF, and VMEAS fully describe the test
conditions for each I/O standard. The most accurate predic-
tion of propagation delay in any given application can be
obtained through IBIS simulation, using the following
method:
1.
Simulate the output driver of choice into the generalized
test setup, using values from Table 31.
2.
Record the time to VMEAS.
3.
Simulate the output driver of choice into the actual PCB
trace and load, using the appropriate IBIS model or
capacitance value to represent the load.
4.
Record the time to VMEAS.
5.
decrease in delay yields the actual worst-case
propagation delay (clock-to-input) of the PCB trace.
Figure 4: Generalized Test Setup
VREF
RREF
VMEAS
(voltage level when taking
delay measurement)
CREF
(probe capacitance)
FPGA Output
DS302_05_031708
Table 31: Output Delay Measurement Methodology
Description
I/O Standard
Attribute
RREF
(
Ω)
CREF(1)
(pF)
VMEAS
(V)
VREF
(V)
LVTTL (Low-Voltage Transistor-Transistor Logic)
LVTTL (all)
1M
0
1.4
0
LVCMOS (Low-Voltage CMOS), 3.3V
LVCMOS33
1M
0
1.65
0
LVCMOS, 2.5V
LVCMOS25
1M
0
1.25
0
LVCMOS, 1.8V
LVCMOS18
1M
0
0.9
0
LVCMOS, 1.5V
LVCMOS15
1M
0
0.75
0
LVCMOS, 1.2V
LVCMOS12
1M
0
0.75
0
PCI (Peripheral Component Interface), 33 MHz, 3.3V
PCI33_3 (rising edge)
25
10(2)
0.94
0
PCI33_3 (falling edge)
25
10(2)
2.03
3.3
PCI, 66 MHz, 3.3V
PCI66_3 (rising edge)
25
10(2)
0.94
0
PCI66_3 (falling edge)
25
10(2)
2.03
3.3
PCI-X, 133 MHz, 3.3V
PCIX (rising edge)
25
10(3)
0.94
PCIX (falling edge
25
10(3)
2.03
3.3
GTL (Gunning Transceiver Logic)
GTL
25
0
0.8
1.2
GTL Plus
GTLP
25
0
1.0
1.5
HSTL (High-Speed Transceiver Logic), Class I
HSTL_I
50
0
VREF
0.75
HSTL, Class II
HSTL_II
25
0
VREF
0.75
HSTL, Class III
HSTL_III
50
0
0.9
1.5
HSTL, Class IV
HSTL_IV
25
0
0.9
1.5
HSTL, Class I, 1.8V
HSTL_I_18
50
0
VREF
0.9
HSTL, Class II, 1.8V
HSTL_II_18
25
0
VREF
0.9
HSTL, Class III, 1.8V
HSTL_III_18
50
0
1.1
1.8
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| XC4VFX100-12FFG1152C | 功能描述:IC FPGA VIRTEX-4FX 100K 1152FBGA RoHS:是 类别:集成电路 (IC) >> 嵌入式 - FPGA（现场可编程门阵列） 系列:Virtex®-4 FX 产品变化通告:XC4000(E,L) Discontinuation 01/April/2002 标准包装:24 系列:XC4000E/X LAB/CLB数:100 逻辑元件/单元数:238 RAM 位总计:3200 输入/输出数:80 门数:3000 电源电压:4.5 V ~ 5.5 V 安装类型:表面贴装 工作温度:-40°C ~ 100°C 封装/外壳:120-BCBGA 供应商设备封装:120-CPGA（34.55x34.55） |
| XC4VFX100-12FFG1152CES | 制造商:Xilinx 功能描述: |
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