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參數(shù)資料
| 型號： | FLEX10KE |
| 廠商： | Altera Corporation |
| 英文描述： | Embedded Programmable Logic Family |
| 中文描述： | 嵌入式可編程邏輯系列 |
| 文件頁數(shù)： | 15/114頁 |
| 文件大?。?/td> | 1422K |
| 代理商： | FLEX10KE |
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Altera Corporation
15
FLEX 10K Embedded Programmable Logic Family Data Sheet
The programmable flipflop in the LE can be configured for D, T, JK, or SR
operation. The clock, clear, and preset control signals on the flipflop can
be driven by global signals, general-purpose I/O pins, or any internal
logic. For combinatorial functions, the flipflop is bypassed and the output
of the LUT drives the output of the LE.
The LE has two outputs that drive the interconnect; one drives the local
interconnect and the other drives either the row or column FastTrack
Interconnect. The two outputs can be controlled independently; for
example, the LUT can drive one output while the register drives the other
output. This feature, called register packing, can improve LE utilization
because the register and the LUT can be used for unrelated functions.
The FLEX 10K architecture provides two types of dedicated high-speed
data paths that connect adjacent LEs without using local interconnect
paths: carry chains and cascade chains. The carry chain supports high-
speed counters and adders; the cascade chain implements wide-input
functions with minimum delay. Carry and cascade chains connect all LEs
in an LAB and all LABs in the same row. Intensive use of carry and
cascade chains can reduce routing flexibility. Therefore, the use of these
chains should be limited to speed-critical portions of a design.
Carry Chain
The carry chain provides a very fast (as low as 0.2 ns) carry-forward
function between LEs. The carry-in signal from a lower-order bit drives
forward into the higher-order bit via the carry chain, and feeds into both
the LUT and the next portion of the carry chain. This feature allows the
FLEX 10K architecture to implement high-speed counters, adders, and
comparators of arbitrary width efficiently. Carry chain logic can be
created automatically by the MAX+PLUS II Compiler during design
processing, or manually by the designer during design entry.
Parameterized functions such as LPM and DesignWare functions
automatically take advantage of carry chains.
Carry chains longer than eight LEs are automatically implemented by
linking LABs together. For enhanced fitting, a long carry chain skips
alternate LABs in a row. A carry chain longer than one LAB skips either
from even-numbered LAB to even-numbered LAB, or from odd-
numbered LAB to odd-numbered LAB. For example, the last LE of the
first LAB in a row carries to the first LE of the third LAB in the row. The
carry chain does not cross the EAB at the middle of the row. For instance,
in the EPF10K50 device, the carry chain stops at the eighteenth LAB and a
new one begins at the nineteenth LAB.
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| FLEX110 | 功能描述:開發(fā)板和工具包 - PIC / DSPIC Multibus Pack RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓: |
| FLEX111 | 功能描述:開發(fā)板和工具包 - PIC / DSPIC Fasttrack suite RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓: |
| FLEX112 | 功能描述:開發(fā)板和工具包 - PIC / DSPIC Demo2 Pack RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓: |
| FLEX113 | 功能描述:開發(fā)板和工具包 - 無線 Mini Kit RoHS:否 制造商:Arduino 產(chǎn)品:Evaluation Boards 工具用于評估:AT32UC3L 核心:AVR32 頻率: 接口類型:USB 工作電源電壓:5 V |
| FLEX114 | 功能描述:開發(fā)板和工具包 - PIC / DSPIC Demo2 suite RoHS:否 制造商:Microchip Technology 產(chǎn)品:Starter Kits 工具用于評估:chipKIT 核心:Uno32 接口類型: 工作電源電壓: |
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