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LFX500C-5FN256C Fiches technique(PDF) 4 Page - Lattice Semiconductor

No de pièce LFX500C-5FN256C
Description  ispXPGA Family
Download  115 Pages
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Fabricant  LATTICE [Lattice Semiconductor]
Site Internet  http://www.latticesemi.com
Logo LATTICE - Lattice Semiconductor

LFX500C-5FN256C Fiches technique(HTML) 4 Page - Lattice Semiconductor

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Lattice Semiconductor
ispXPGA Family Data Sheet
4
Figure 1. ispXPGA Block Diagram
Programmable Function Unit
The Programmable Function Unit (PFU) is the basic building block of the ispXPGA architecture. The PFUs are
arranged in rows and columns in the device with PFU (1,1) referring to (row 1, column 1). Each PFU consists of
four Configurable Logic Elements (CLEs), four Configurable Sequential Elements (CSEs), and a Wide Logic Gen-
erator (WLG). By utilizing these components, the PFU can implement a variety of functions. Table 3 lists some of
the function capabilities of the PFU.
There are 57 inputs to each PFU and nine outputs. The PFU uses 20 inputs for logic, and 37 inputs drive the con-
trol logic from which six control signals are derived for the PFU.
Table 3. Function Capability of ispXPGA PFU
Function
Capability
Look-up table
LUT-4, LUT-5, LUT-6
Wide logic functions
Up to 20 input logic functions
Multiplexing
2:1, 4:1, 8:1
Arithmetic logic
Dedicated carry chain and booth multiplication logic
Single-port RAM
16X1, 16X2, 16X4, 32X1, 32X2, 64X1
Double-port RAM
16X1, 16X2, 32X1
Shift register
8-bit shift registers (up to 32-bit shift capability)
PFU
PIC
sysHSI Block
sysCLOCK PLL
sysIO Buffer
sysMEM Block


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