LFEC1E-3TN144I Lattice, LFEC1E-3TN144I Datasheet - Page 20
LFEC1E-3TN144I
Manufacturer Part Number
LFEC1E-3TN144I
Description
IC FPGA 1.5KLUTS 97I/O 144-TQFP
Manufacturer
Lattice
Datasheet
1.LFEC3E-5TN144C.pdf
(163 pages)
Specifications of LFEC1E-3TN144I
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
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Manufacturer
Quantity
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Company:
Part Number:
LFEC1E-3TN144I
Manufacturer:
Lattice Semiconductor Corporation
Quantity:
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Figure 2-20. MAC sysDSP Element
MULTADD sysDSP Element
In this case, the operands A0 and B0 are multiplied and the result is added/subtracted with the result of the multi-
plier operation of operands A1 and A2. The user can enable the input, output and pipeline registers. Figure 2-21
shows the MULTADD sysDSP element.
Figure 2-21. MULTADD
Multiplicand
Multiplier
SignedAB
Addn
Accumsload
Shift Register B Out
Multiplicand A0
Multiplicand A1
Multiplier B0
Multiplier B1
Signed
Addn
Shift Register B In
Shift Register B Out
Shift Register B In
n
Register B
Input Data
n
n
Register B
Register B
Input Data
Input Data
n
n
n
n
n
n
Register
Register
Register
n
n
Input
Input
Input
Register
Register
m
Input
Input
Register A
Input Data
m
m
Register A
Register A
Input Data
Input Data
m
n
Shift Register A Out
Shift Register A In
m
Shift Register A Out
m
m
m
Register
Register
Pipeline
Pipeline
Register
Pipeline
Shift Register A In
m
m
Register
Pipeline
Register
Pipeline
m
n
Pipe
Pipe
Reg
Reg
m
n
m
n
Accumulator
Accumulator
Accumulator
2-17
Multiplier
To
To
To
Register
Pipeline
x
To Add/Sub
To Add/Sub
Multiplier
Multiplier
Register
Pipeline
Register
Pipeline
(default)
x
x
m+n
(default)
(default)
m+n
m+n
LatticeECP/EC Family Data Sheet
Accumulator
m+n+16 bits
Add/Sub
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
(default)
(default)
m+n+1
m+n+16 bits
(default)
(default)
m+n+1
Architecture
Output
Output
Overflow
signal
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