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參數(shù)資料
| 型號： | LFECP40E-4T100I |
| 廠商： | Lattice Semiconductor Corporation |
| 英文描述： | LatticeECP/EC Family Data Sheet |
| 中文描述： | LatticeECP / EC的系列數(shù)據(jù)手冊 |
| 文件頁數(shù)： | 19/117頁 |
| 文件大?。?/td> | 557K |
| 代理商： | LFECP40E-4T100I |
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2-16
Architecture
Lattice Semiconductor
LatticeECP/EC Family Data Sheet
MULT sysDSP Element
This multiplier element implements a multiply with no addition or accumulator nodes. The two operands, A and B,
are multiplied and the result is available at the output. The user can enable the input/output and pipeline registers.
Figure 2-18 shows the MULT sysDSP element.
Figure 2-18. MULT sysDSP Element
MAC sysDSP Element
In this case the two operands, A and B, are multiplied and the result is added with the previous accumulated value.
This accumulated value is available at the output. The user can enable the input and pipeline registers but the out-
put register is always enabled. The output register is used to store the accumulated value. A registered over
fl
ow
signal is also available. The over
fl
ow conditions are provided later in this document. Figure 2-19 shows the MAC
sysDSP element.
Figure 2-19. MAC sysDSP Element
Multiplier
x
n
m
m
n
m
n
m
n
n
m
m+n
m+n
(default)
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Pipeline
Register
Input
Register
Multiplier
Multiplicand
Signed
Shift Register A In
Shift Register B In
Shift Register A Out
Shift Register B Out
Output
Input Data
Register A
Input Data
Register B
O
R
To
Multiplier
Multiplier
x
n
m
m+n
(default)
m+n+16 bits
(default)
m+n+16 bits
(default)
Input Data
Register B
Input Data
Register A
m
n
n
n
m
n
n
m
O
R
O
R
Accumulator
Multiplier
Multiplicand
SignedAB
Shift Register A In
Shift Register B In
Shift Register A Out
Shift Register B Out
Output
Addn
Accumsload
Pipeline
Register
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Input
Register
Pipeline
Register
Input
Register
Pipeline
Register
Input
Register
Pipeline
Register
To
Accumulator
To
Accumulator
To
Accumulator
Overflow
signal
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LFECP40E-4T144C | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:LatticeECP/EC Family Data Sheet |
| LFECP40E-4T144I | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:LatticeECP/EC Family Data Sheet |
| LFECP40E-5F256C | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:LatticeECP/EC Family Data Sheet |
| LFECP40E-5F256I | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:LatticeECP/EC Family Data Sheet |
| LFECP40E-5F484C | 制造商:LATTICE 制造商全稱:Lattice Semiconductor 功能描述:LatticeECP/EC Family Data Sheet |
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