LFE2M70E-5FN900I Lattice, LFE2M70E-5FN900I Datasheet - Page 27
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LFE2M70E-5FN900I
Manufacturer Part Number
LFE2M70E-5FN900I
Description
IC FPGA 67KLUTS 900FPBGA
Manufacturer
Lattice
Datasheet
1.LFE2-12E-5FN256C.pdf
(385 pages)
Specifications of LFE2M70E-5FN900I
Number Of Logic Elements/cells
*
Number Of Labs/clbs
*
Total Ram Bits
*
Number Of I /o
*
Number Of Gates
*
Voltage - Supply
*
Mounting Type
*
Operating Temperature
*
Package / Case
*
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
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Lattice Semiconductor
MULTADDSUB 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 2-25
shows the MULTADDSUB sysDSP element.
Figure 2-25. MULTADDSUB
Multiplicand A0
Multiplicand A1
Multiplier B0
Multiplier B1
Signed A
Signed B
Addn
Shift Register B Out
Shift Register B In
n
n
Input Data
Register B
Input Data
Register B
n
n
n
n
n
Register
Register
Register
Input
Input
Input
m
m
Input Data
Register A
Input Data
Register A
m
Shift Register A Out
m
m
Shift Register A In
m
m
Pipeline
Register
Register
Register
Pipeline
Pipeline
Pipe
Pipe
Pipe
Reg
Reg
Reg
m
n
m
n
2-24
To Add/Sub
To Add/Sub
To Add/Sub
Multiplier
Multiplier
Register
Pipeline
Register
Pipeline
x
x
(default)
(default)
m+n
m+n
LatticeECP2/M Family Data Sheet
Add/Sub
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
(default)
m+n+1
(default)
m+n+1
Architecture
Output
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