參數(shù)資料
型號(hào)： EP20K400EQC240-1
廠商： ALTERA CORP
元件分類： PLD
英文描述： LOADABLE PLD, PQFP240
封裝： PLASTIC, QFP-240
文件頁(yè)數(shù)： 29/65頁(yè)
文件大?。?/td> 781K
代理商： EP20K400EQC240-1
Altera Corporation
57
Preliminary Information
APEX 20K Programmable Logic Device Family Data Sheet
The encoded output is better suited for designs that ensure duplicate data
is not written into the CAM. If duplicate data is written into two locations,
the CAM’s output will not be correct. If the CAM may contain duplicate
data, the unencoded output is a better solution; CAM with unencoded
outputs can distinguish multiple data locations.
CAM can be pre-loaded with data during configuration, or it can be
written during system operation. In most cases, two clock cycles are
required to write each word into CAM. When don’t-care bits are used, a
third clock cycle is required.
Driving Signals to the ESB
ESBs provide flexible options for driving control signals. Different clocks
can be used for the ESB inputs and outputs. Registers can be inserted
independently on the data input, data output, read address, write
address, WE, and RE signals. The global signals and the local interconnect
can drive the WE and RE signals. The global signals, dedicated clock pins,
and local interconnect can drive the ESB clock signals. Because the LEs
drive the local interconnect, the LEs can control the WE and RE signals and
the ESB clock, clock enable, and asynchronous clear signals. Figure 24
shows the ESB control signal generation logic.
Figure 24. ESB Control Signal Generation
Note:
(1)
APEX 20KE devices have four dedicated clocks.
RDEN
WREN
INCLOCK
INCLKENA
OUTCLOCK
OUTCLKENA
Dedicated
Clocks
Global
Signals
Local
Interconnect
Local
Interconnect
Local
Interconnect
Local
Interconnect
2 or 4
4
Local
Interconnect
Local
Interconnect
INCLR OUTCLR
(1)
相關(guān)PDF資料
PDF描述
EP20K400EQC240-2 LOADABLE PLD, PQFP240
EP20K400EQI240-1 LOADABLE PLD, PQFP240
EP20K400EQI240-2 LOADABLE PLD, PQFP240
EP20K400EQI240-3 LOADABLE PLD, PQFP240
EP20K400ERC240-1 LOADABLE PLD, PQFP240
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EP20K400FC672-1ES 制造商:未知廠家 制造商全稱:未知廠家 功能描述:FPGA
EP20K400FC672-1X 功能描述:FPGA - 現(xiàn)場(chǎng)可編程門陣列 CPLD - APEX 20K 1664 Macros 502 IO RoHS:否 制造商:Altera Corporation 系列:Cyclone V E 柵極數(shù)量: 邏輯塊數(shù)量:943 內(nèi)嵌式塊RAM - EBR:1956 kbit 輸入/輸出端數(shù)量:128 最大工作頻率:800 MHz 工作電源電壓:1.1 V 最大工作溫度:+ 70 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-256
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