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參數(shù)資料
| 型號(hào)： | LC4384x |
| 廠商： | Lattice Semiconductor Corporation |
| 英文描述： | 3.3V/2.5V/1.8V In-System Programmable SuperFAST High density PDLs |
| 中文描述： | 3.3V/2.5V/1.8V在系統(tǒng)可編程超快高密度PDLs |
| 文件頁(yè)數(shù)： | 6/91頁(yè) |
| 文件大?。?/td> | 851K |
| 代理商： | LC4384X |
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Lattice Semiconductor
ispMACH 4000V/B/C/Z Family Data Sheet
6
Product Term Allocator
The product term allocator assigns product terms from a cluster to either logic or control applications as required
by the design being implemented. Product terms that are used as logic are steered into a 5-input OR gate associ-
ated with the cluster. Product terms that used for control are steered either to the macrocell or I/O cell associated
with the cluster. Table 3 shows the available functions for each of the
fi
ve product terms in the cluster. The OR gate
output connects to the associated I/O cell, providing a fast path for narrow combinatorial functions, and to the logic
allocator.
Table 3. Individual PT Steering
Cluster Allocator
The cluster allocator allows clusters to be steered to neighboring macrocells, thus allowing the creation of functions
with more product terms. Table 4 shows which clusters can be steered to which macrocells. Used in this manner,
the cluster allocator can be used to form functions of up to 20 product terms. Additionally, the cluster allocator
accepts inputs from the wide steering logic. Using these inputs, functions up to 80 product terms can be created.
Table 4. Available Clusters for Each Macrocell
Wide Steering Logic
The wide steering logic allows the output of the cluster allocator n to be connected to the input of the cluster alloca-
tor
n
+4. Thus, cluster chains can be formed with up to 80 product terms, supporting wide product term functions
and allowing performance to be increased through a single GLB implementation. Table 5 shows the product term
chains.
Product Term
Logic
Control
PT
n
Logic PT
Single PT for XOR/OR
PT
n
n
n
n
+1
Logic PT
Individual Clock (PT Clock)
PT
+2
Logic PT
Individual Initialization or Individual Clock Enable (PT Initialization/CE)
PT
+3
Logic PT
Individual Initialization (PT Initialization)
PT
+4
Logic PT
Individual OE (PTOE)
Macrocell
Available Clusters
M0
—
C0
C1
C2
M1
C0
C1
C2
C3
M2
C1
C2
C3
C4
M3
C2
C3
C4
C5
M4
C3
C4
C5
C6
M5
C4
C5
C6
C7
M6
C5
C6
C7
C8
M7
C6
C7
C8
C9
M8
C7
C8
C9
C10
M9
C8
C9
C10
C11
M10
C9
C10
C11
C12
M11
C10
C11
C12
C13
M12
C11
C12
C13
C14
M13
C12
C13
C14
C15
M14
C13
C14
C15
—
M15
C14
C15
—
—
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相關(guān)代理商/技術(shù)參數(shù) |
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| LC43A | 制造商:Microsemi Corporation 功能描述:TVS SGL UNI-DIR 43V 1.5KW 2PIN DO-13 - Bulk 制造商:Microsemi Corporation 功能描述:TVS 1500V LOW CAP DO-202AA 制造商:Microsemi Corporation 功能描述:TVS DIODE 43VWM 69.4VC DO202AA 制造商:Crydom 功能描述: |
| LC45 | 制造商:Microsemi Corporation 功能描述:TVS SGL UNI-DIR 45V 1.5KW 2PIN DO-13 - Bulk 制造商:Microsemi Corporation 功能描述:TVS DIODE 45VWM 80.3VC DO202AA |
| LC4500291KB-XT | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER COG - Waffle Pack |
| LC450029PKB-XT | 制造商:ON Semiconductor 功能描述:LCD DISPLAY DRIVER COG - Waffle Pack |
| LC450M0100BPF-2235 | 制造商:Yageo Corporation 功能描述: |
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