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| 型号： | EPM9560RI240-20 |
| 文件页数： | 2/42页 |
| 文件大小： | 489K |
| 代理商： | EPM9560RI240-20 |
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10
Altera Corporation
MAX 9000 Programmable Logic Device Family Data Sheet
Expander Product Terms
Although most logic functions can be implemented with the five product
terms available in each macrocell, some logic functions are more complex
and require additional product terms. Although another macrocell can
supply the required logic resources, the MAX 9000 architecture also offers
both shareable and parallel expander product terms that provide
additional product terms directly to any macrocell in the same LAB. These
expanders help ensure that logic is synthesized with the fewest possible
logic resources to obtain the fastest possible speed.
Shareable Expanders
Each LAB has 16 shareable expanders that can be viewed as a pool of
uncommitted single product terms (one from each macrocell) with
inverted outputs that feed back into the LAB local array. Each shareable
expander can be used and shared by any or all macrocells in the LAB to
build complex logic functions. A small delay (tLOCAL + tSEXP) is incurred
when shareable expanders are used. Figure 4 shows how shareable
expanders can feed multiple macrocells.
Figure 4. MAX 9000 Shareable Expanders
Macrocell
Product-Term
Logic
Product-Term Select Matrix
Macrocell
Product-Term
Logic
LAB Local Array
16 Local
Feedbacks
16 Shared
Expanders
33 Row
FastTrack
Interconnect
Signals
Shareable expanders can be shared by any or all macrocells in the LAB.
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| EPM9560RI304-15 | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
| EPM9560RI304-20 | 制造商:Altera Corporation 功能描述:IC MAX |
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| EPM95B-4001 | 功能描述:拨动开关 SEALED OI RoHS:否 制造商:C&K Components 触点形式:DPDT 开关功能:ON - ON - ON 电流额定值: 电压额定值 AC:20 V 电压额定值 DC:20 V 功率额定值:0.4 VA 端接类型:V-Bracket 安装风格: 端子密封:Epoxy 触点电镀:Gold 照明:Not Illuminated |
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