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CLK14_6N 参数 Datasheet PDF下载

CLK14_6N图片预览
型号: CLK14_6N
PDF下载: 下载PDF文件 查看货源
内容描述: 的Cyclone III器件手册 [Cyclone III Device Handbook]
分类和应用:
文件页数/大小: 274 页 / 7302 K
品牌: ALTERA [ ALTERA CORPORATION ]
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Chapter 2: Logic Elements and Logic Array Blocks in the Cyclone III Device Family  
2–7  
Document Revision History  
Figure 2–6 shows the LAB control signal generation circuit.  
Figure 2–6. Cyclone III Device Family LAB-Wide Control Signals  
Dedicated  
6
LAB Row  
Clocks  
Local  
Interconnect  
Local  
Interconnect  
Local  
Interconnect  
Local  
Interconnect  
labclkena2  
labclkena1  
labclr1  
synclr  
labclk1  
labclk2  
syncload  
labclr2  
LAB-wide signals control the logic for the clear signal of the register. The LE directly  
supports an asynchronous clear function. Each LAB supports up to two asynchronous  
clear signals (labclr1and labclr2).  
A LAB-wide asynchronous load signal to control the logic for the preset signal of the  
register is not available. The register preset is achieved with a NOT gate push-back  
technique. The Cyclone III device family only supports either a preset or  
asynchronous clear signal.  
In addition to the clear port, the Cyclone III device family provides a chip-wide reset  
pin (DEV_CLRn) that resets all registers in the device. An option set before compilation  
in the Quartus II software controls this pin. This chip-wide reset overrides all other  
control signals.  
Document Revision History  
Table 2–1 lists the revision history for this document.  
Table 2–1. Document Revision History (Part 1 of 2)  
Date  
Version  
2.3  
Changes  
December 2011  
December 2009  
July 2009  
Minor text edits.  
2.2  
Minor changes to the text.  
Minor edit to the hyperlinks.  
2.1  
Updated to include Cyclone III LS information  
Updated chapter part number.  
June 2009  
2.0  
1.2  
Updated “Introduction” on page 2–1.  
Updated Figure 2–1 on page 2–2 and Figure 2–4 on page 2–5.  
Updated “LAB Control Signals” on page 2–6.  
Updated chapter to new template.  
October 2008  
December 2011 Altera Corporation  
Cyclone III Device Handbook  
Volume 1  
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