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參數(shù)資料
| 型號(hào)： | XC3S1000-5FTG256C |
| 廠商： | Xilinx Inc |
| 文件頁(yè)數(shù)： | 203/272頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | SPARTAN-3A FPGA 1M 256-FTBGA |
| 產(chǎn)品培訓(xùn)模塊： | Extended Spartan 3A FPGA Family |
| 標(biāo)準(zhǔn)包裝： | 90 |
| 系列： | Spartan®-3 |
| LAB/CLB數(shù)： | 1920 |
| 邏輯元件/單元數(shù)： | 17280 |
| RAM 位總計(jì)： | 442368 |
| 輸入/輸出數(shù)： | 173 |
| 門(mén)數(shù)： | 1000000 |
| 電源電壓： | 1.14 V ~ 1.26 V |
| 安裝類型： | 表面貼裝 |
| 工作溫度： | 0°C ~ 85°C |
| 封裝/外殼： | 256-LBGA |
| 供應(yīng)商設(shè)備封裝： | 256-FTBGA |
| 配用： | 122-1502-ND - KIT STARTER SPARTAN-3 PCI-E |
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Spartan-3 FPGA Family: Functional Description
DS099 (v3.1) June 27, 2013
Product Specification
36
Coarse Phase Shift Outputs of the DLL Component
In addition to CLK0 for zero-phase alignment to the CLKIN signal, the DLL also provides the CLK90, CLK180 and CLK270
outputs for 90°, 180° and 270° phase-shifted signals, respectively. These signals are described in Table 16, page 33. Their
relative timing in the Low Frequency Mode is shown in Figure 22, page 37. The CLK90, CLK180 and CLK270 outputs are
not available when operating in the High Frequency mode. (See the description of the DLL_FREQUENCY_MODE attribute
in Table 17, page 33.) For control in finer increments than 90°, see Phase Shifter (PS), page 39.
Basic Frequency Synthesis Outputs of the DLL Component
The DLL component provides basic options for frequency multiplication and division in addition to the more flexible synthesis
capability of the DFS component, described in a later section. These operations result in output clock signals with
frequencies that are either a fraction (for division) or a multiple (for multiplication) of the incoming clock frequency. The
CLK2X output produces an in-phase signal that is twice the frequency of CLKIN. The CLK2X180 output also doubles the
frequency, but is 180° out-of-phase with respect to CLKIN. The CLKDIV output generates a clock frequency that is a
predetermined fraction of the CLKIN frequency. The CLKDV_DIVIDE attribute determines the factor used to divide the
CLKIN frequency. The attribute can be set to various values as described in Table 17. The basic frequency synthesis outputs
are described in Table 16. Their relative timing in the Low Frequency Mode is shown in Figure 22.
The CLK2X and CLK2X180 outputs are not available when operating in the High Frequency mode. See the description of
the DLL_FREQUENCY_MODE attribute in Table 18.
Duty Cycle Correction of DLL Clock Outputs
The CLK2X(1), CLK2X180, and CLKDV(2) output signals ordinarily exhibit a 50% duty cycle—even if the incoming CLKIN
signal has a different duty cycle. A 50% duty cycle means that the High and Low times of each clock cycle are equal. The
DUTY_CYCLE_CORRECTION attribute determines whether or not duty cycle correction is applied to the CLK0, CLK90,
CLK180 and CLK270 outputs. If DUTY_CYCLE_CORRECTION is set to TRUE, then the duty cycle of these four outputs is
corrected to 50%. If DUTY_CYCLE_CORRECTION is set to FALSE, then these outputs exhibit the same duty cycle as the
CLKIN signal. Figure 22 compares the characteristics of the DLL’s output signals to those of the CLKIN signal.
1. The CLK2X output generates a 25% duty cycle clock at the same frequency as the CLKIN signal until the DLL has achieved lock.
2. The duty cycle of the CLKDV outputs may differ somewhat from 50% (i.e., the signal will be High for less than 50% of the period) when the
CLKDV_DIVIDE attribute is set to a non-integer value and the DLL is operating in the High Frequency mode.
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| XC2V40-4FG256I | IC FPGA VIRTEX-II 256FGBGA |
| XC2V40-5FGG256C | IC FPGA VIRTEX-II 40K 256-FBGA |
| XC2V40-4FGG256I | IC FPGA VIRTEX-II 40K 256-FBGA |
| 3341-32BULK | CONN JACKSOCKET M2.5/4-40 0.50" |
| DB53750-2 | DSUB DB INTERFACIAL SEAL |
相關(guān)代理商/技術(shù)參數(shù) |
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| XC3S1000-5PQ208C | 制造商:XILINX 制造商全稱:XILINX 功能描述:Spartan-3 FPGA |
| XC3S1000-5PQ208I | 制造商:XILINX 制造商全稱:XILINX 功能描述:Spartan-3 FPGA |
| XC3S1000-5PQG208C | 制造商:XILINX 制造商全稱:XILINX 功能描述:Spartan-3 FPGA Family: Complete Data Sheet |
| XC3S1000-5PQG208I | 制造商:XILINX 制造商全稱:XILINX 功能描述:Spartan-3 FPGA Family: Complete Data Sheet |
| XC3S1000-5TQ144C | 制造商:XILINX 制造商全稱:XILINX 功能描述:Spartan-3 FPGA |
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