Architecture
LatticeECP2/M Family Data Sheet
Lattice Semiconductor
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 2-23 shows the MULT sysDSP element.
Figure 2-23. MULT sysDSP Element
Shift Register B In
Multiplicand
Shift Register A In
m
m
m
Multiplier
n
n
Multiplier
Input Data
Register A
m
n
m+n
(default)
m+n
n
x
Output
Input Data
Register B
Pipeline
Register
m
n
Signed A
Signed B
Input
Register
To
Multiplier
Input
Register
To
Multiplier
CLK (CLK0,CLK1,CLK2,CLK3)
CE (CE0,CE1,CE2,CE3)
RST(RST0,RST1,RST2,RST3)
Shift Register B Out
Shift Register A Out
2-23
LATTICE [ LATTICE SEMICONDUCTOR ]
