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參數(shù)資料
型號(hào)： LC4128V-10T100I
文件頁(yè)數(shù)： 5/57頁(yè)
文件大小： 1078K
代理商： LC4128V-10T100I
Lattice Semiconductor
ispMACH 4000V/B/C Family Data Sheet
5
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 2 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 2. 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 3 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 3. 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 4 shows the product term
chains.
Product Term
PT
PT
n
PT
n
PT
n
PT
n
Logic
Logic PT
Logic PT
Logic PT
Logic PT
Logic PT
Control
n
+1
+2
+3
+4
Single PT for XOR/OR
Individual Clock (PT Clock)
Individual Initialization or Individual Clock Enable (PT Initialization/CE)
Individual Initialization (PT Initialization)
Individual OE (PTOE)
Macrocell
M0
M1
M2
M3
M4
M5
M6
M7
M8
M9
M10
M11
M12
M13
M14
M15
Available Clusters
—
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
—
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
—
—
相關(guān)PDF資料
PDF描述
LC4128V-10T128I
LC4128V-5T100C
LC4128V-5T100I
LC4128V-5T128C
LC4256B-3F256AC
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LC4128V-10T128I 功能描述:CPLD - 復(fù)雜可編程邏輯器件 PROGRAMMABLE SUPER FAST HI DENSITY PLD RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
LC4128V-10T144I 功能描述:CPLD - 復(fù)雜可編程邏輯器件 PROGRAMMABLE SUPER FAST HI DENSITY PLD RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
LC4128V-10TN100I 功能描述:CPLD - 復(fù)雜可編程邏輯器件 PROGRAMMABLE SUPER FAST HI DENSITY PLD RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
LC4128V-10TN128I 功能描述:CPLD - 復(fù)雜可編程邏輯器件 PROGRAMMABLE SUPER FAST HI DENSITY PLD RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
LC4128V-10TN144I 功能描述:CPLD - 復(fù)雜可編程邏輯器件 PROGRAMMABLE SUPER FAST HI DENSITY PLD RoHS:否 制造商:Lattice 系列: 存儲(chǔ)類型:EEPROM 大電池?cái)?shù)量:128 最大工作頻率:333 MHz 延遲時(shí)間:2.7 ns 可編程輸入/輸出端數(shù)量:64 工作電源電壓:3.3 V 最大工作溫度:+ 90 C 最小工作溫度:0 C 封裝 / 箱體:TQFP-100
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