Verilog hdl prototype, Vhdl component declaration, Vhdl library_use declaration – Altera Integer Arithmetic IP User Manual
Page 63: Ports, Verilog hdl prototype -10, Vhdl component declaration -10, Vhdl library_use declaration -10, Ports -10
The following figure shows the double accumulator implementation.
Figure 6-12: Double Accumulator
a0
b0
a1
b1
Mult0
Mult1
Accu mulator feedba ck
Output result
+/-
+/-
Dou ble Accu mulator Register
Output Register
Verilog HDL Prototype
The following Verilog HDL prototype is located in the Verilog Design File (.v) in the
tion directory>\eda\synthesis directory.
VHDL Component Declaration
The VHDL component declaration is located in the VHDL Design File (.vhd) in the
tion directory> directory.
VHDL LIBRARY_USE Declaration
The VHDL LIBRARY-USE declaration is not required if you use the VHDL Component Declaration.
LIBRARY altera_mf;
USE altera_mf.altera_mf_components.all;
Ports
The following tables list the input and output ports of the ALTERA_MULT_ADD megafunction.
Table 6-1: ALTERA_MULT_ADD MegaFunction Input Ports
Port name
Required
Description
dataa []
Yes
Data input to the multiplier. Input port
[NUMBER_OF_
MULTIPLIERS * WIDTH_A - 1 … 0]
wide
6-10
Verilog HDL Prototype
UG-01063
2014.12.19
Altera Corporation
ALTERA_MULT_ADD (Multiply-Adder)