LFE2M20E-6FN484C LATTICE SEMICONDUCTOR, LFE2M20E-6FN484C Datasheet - Page 28
LFE2M20E-6FN484C
Manufacturer Part Number
LFE2M20E-6FN484C
Description
FPGA LatticeECP2M Family 19000 Cells 90nm (CMOS) Technology 1.2V 484-Pin FBGA
Manufacturer
LATTICE SEMICONDUCTOR
Datasheet
1.LFE2-12SE-6FN256C.pdf
(389 pages)
Specifications of LFE2M20E-6FN484C
Package
484FBGA
Family Name
LatticeECP2M
Device Logic Units
19000
Typical Operating Supply Voltage
1.2 V
Maximum Number Of User I/os
304
Ram Bits
1246208
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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
Register B
Register B
Input Data
Input Data
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
Register
Pipeline
Pipeline
Register
Pipeline
Register
Pipe
Pipe
Pipe
Reg
Reg
Reg
m
n
m
n
2-25
To Add/Sub
To Add/Sub
To Add/Sub
Multiplier
Multiplier
Register
Pipeline
Pipeline
Register
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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