LFE3-35EA-8FN672I Lattice, LFE3-35EA-8FN672I Datasheet - Page 30

• Manufacturer Part Number: LFE3-35EA-8FN672I
• Description: IC FPGA 33.3K LUTS 310I/O FN672
• Manufacturer: Lattice
• Series: ECP3r

Specifications of LFE3-35EA-8FN672I

• Number Of Logic Elements/cells: 33000
• Number Of Labs/clbs: 4125
• Total Ram Bits: 1358848
• Number Of I /o: 310
• Number Of Gates: -
• Voltage - Supply: 1.14 V ~ 1.26 V
• Mounting Type: Surface Mount
• Operating Temperature: -40°C ~ 100°C
• Package / Case: 672-BBGA
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 220-1163

Lattice Semiconductor
MULTADDSUB DSP Element
In this case, the operands AA and AB are multiplied and the result is added/subtracted with the result of the multi-
plier operation of operands BA and BB. The user can enable the input, output and pipeline registers. Figure 2-29
shows the MULTADDSUB sysDSP element.
Figure 2-29. MULTADDSUB
DSP Slice
Previous
Rounding
IR = Input Register
PR = Pipeline Register
OR = Output Register
FR = Flag Register
SRIB
SRIA
C_ALU
A_ALU
CIN
0
IR
C
IR
AA
MULTA
PR
OR
AMUX
A_ALU
IR
From FPGA Core
AB
To FPGA Core
0
R = Logic (B, C)
R= A ± B ± C
2-27
OR
PR
IR
OPCODE
FR
0
=
=
B_ALU
BMUX
IR
ALU
BA
MULTB
LatticeECP3 Family Data Sheet
PR
OR
IR
BB
IR
COUT
SROB
SROA
DSP Slice
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Architecture