参数资料
型号: EPM9320A
厂商: Altera Corporation
英文描述: Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
中文描述: 可编程逻辑器件系列(MAX9000可编程逻辑系列器件)
文件页数: 10/41页
文件大小: 604K
代理商: EPM9320A
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 (
t
LOCAL
+ t
SEXP
) 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.
相关PDF资料
PDF描述
EPM9480 Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
EPM9320 Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
EPM9400 Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
EPM9560 Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
EPM9560A Programmable Logic Device Family(MAX9000可编程逻辑系列器件)
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