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Knowledge Database

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Altera provides the following knowledge database that includes support solutions, frequently asked questions, and known issues. Browse by category and note the number in parenthesis indicating the number of results available.

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  • Recent Solutions
    • Last 7 days solutions (18)
    • Last 14 days solutions (48)
    • Last 30 days solutions (79)
  • Known Issues
    • Device Family Issues (67)
      • Arria II GX (14)
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      • Cyclone (3)
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      • HardCopy II (7)
      • HardCopy (2)
      • MAX II (1)
    • Quartus II Issues (1157)
      • Version 10.0 SP1 (7)
      • Version 10.0 (49)
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      • Version 9.1 (105)
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      • Version 7.2 (65)
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      • Version 3.0 SP2 (6)
      • Version 3.0 SP1 (6)
      • Version 3.0 (31)
      • Version 2.2 SP2 (9)
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      • User Guides (6)
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  • Devices (1109)
    • Board Test, Design and Layout (35)
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      • Signal integrity (4)
      • Other (Board) (7)
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      • Other (Configuration) (25)
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    • External Memory Interface (63)
      • DDR (7)
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      • RLDRAM II (5)
      • Other (Ext Mem I/F) (10)
    • General Architecture (Non I/O) (31)
      • CPLD (11)
      • FPGA (11)
      • Structured ASIC (9)
    • Gigabit Transceiver (91)
      • Board Design and Layout (1)
      • Clocking/PLL (5)
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      • Models (1)
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      • Other (Gigabit Transceiver) (21)
    • I/O (283)
      • HSPICE Models (1)
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      • Standards (41)
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    • Internal Memory (20)
      • All Features (Internal Mem) (20)
    • PLL/Clock Management (91)
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      • PLL Architecture/Features (48)
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      • PLL Reconfiguration (7)
      • Specifications (15)
      • Other (PLL) (3)
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      • Power Supply Design (22)
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      • Specification (4)
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      • Thermal Management (10)
      • Other (Power) (11)
    • Programming (CPLD/Config Dev) (52)
      • 3rd Party Programming (1)
      • In-System/Circuit Programming (23)
      • Jam (2)
      • Programming Software (16)
      • Other (Programming) (10)
    • Quality/Reliability/Packaging (45)
      • Manufacturing/Assembly/Reflow (8)
      • Reliability (10)
      • RoHS (3)
      • Specs (17)
      • Other (QA & Packaging) (7)
    • Source Synchronous SERDES (32)
      • Altlvds Behavior (6)
      • DPA (2)
      • External PLL Mode (3)
      • Spec (2)
      • Other (Source Sync SERDES) (19)
    • Other (Devices) (25)
    • Other (Device) (25)
  • Design Software (1177)
    • Board Design & I/O (35)
      • Pin Planning/Management (34)
      • SSN/Signal Integrity Analysis (1)
    • Design Entry/Planning (135)
      • 3rd Party Design Entry Tool (2)
      • Coding Style (23)
      • HardCopy ASIC Design Flow (3)
      • Megafunctions/MegaWizard (45)
      • Schematic/State Machine Entry (10)
      • Settings/Assignments (38)
      • Other (Design Entry/Planning) (14)
    • Implementation/Optimization (147)
      • Chip Planner/LogicLock (18)
      • Design Assistant (1)
      • Design Optimization (4)
      • Design Space Explorer (4)
      • Device Migration (2)
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      • Incremental Compilation (12)
      • Metastability (1)
      • Placement and Routing (70)
      • Resource Property Editor/ECO (1)
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      • Other (Installation) (49)
      • Other (Licensing) (43)
    • MAX+PLUS II (131)
      • Other (MAX+PLUS II) (131)
    • On-Chip Debug (64)
      • SignalProbe (1)
      • SignalTap II (39)
      • Other (On-Chip Debug) (24)
    • Power Analysis/Management (14)
      • PowerPlay Power Analyzer (14)
    • Programming/Configuration (41)
      • Device Program/Configure (4)
      • Quartus II Programmer (34)
      • Other (Programming/Config) (3)
    • Project Management/Scripting (33)
      • Command Line Scripting (2)
      • Quartus II Projects/Revisions (15)
      • Tcl/QSF/SDC (11)
      • Other (Project Management) (5)
    • Simulation/Formal Verification (168)
      • 3rd Party Formal Verification (24)
      • 3rd Party Simulation Tool (80)
      • Legacy Quartus II Simulation (19)
      • ModelSim-Altera (19)
      • Simulation Libraries/Models (2)
      • Other (Simulation) (24)
    • Synthesis & Netlist Viewers (151)
      • 3rd Party EDA Synthesis (45)
      • Language (HDL) Support (1)
      • Netlist Viewers (4)
      • Quartus II Synthesis (95)
      • Other (Synthesis) (6)
    • Timing Analysis (87)
      • 3rd Party Timing Analysis (6)
      • QII Classic Timing Analysis (64)
      • TimeQuest SDC Constraints (1)
      • TimeQuest Timing Analyzer (14)
      • Other (Timing Analysis) (2)
    • Other (Design Software) (66)
    • Other (Design SW) (66)
  • Intellectual Property (242)
    • Comm, Interface & Peripherals (54)
      • Core Behavior / Operation (18)
      • Core Implementation (15)
      • Example Designs (3)
      • IP Spec and Protocol (5)
      • RTL Simulation Issues (4)
      • SOPC Issues (1)
      • Timing Issues (4)
      • Tools/Environment (4)
    • Digital Signal Processing (1)
      • DSP Builder (1)
    • External Memory Interfaces (21)
      • DDR (IP) (1)
      • DDR2 (IP) (7)
      • DDR3 (IP) (7)
      • QDRII / QDRII+ (IP) (2)
      • RLDRAM II (IP) (1)
      • Other (Ext Mem I/F IP) (3)
    • Intellectual Property (1)
      • MegaWizard/ GUI (1)
    • Other (Intellectual Property) (165)
    • Other (IP) (165)
  • Embedded (284)
    • Design Example (8)
      • All (Design Example) (8)
    • Hardware Development (24)
      • Configuration/Booting (3)
      • Flash Programming (6)
      • Hardware Debug (3)
      • Simulation (4)
      • Other (Hardware Development) (8)
    • Installation/Licensing (5)
      • Installation (Embedded Tools) (3)
      • Licensing (Embedded Tools) (2)
    • Nios II Architecture (12)
      • Other (Nios II Architecture) (12)
    • Software Development (114)
      • 3rd Party Products (5)
      • Command Line/SDK Shell (11)
      • Ethernet (2)
      • HAL (8)
      • Nios II IDE (40)
      • Nios II SW Build Tools Eclipse (3)
      • SW Debug (24)
      • Other (Software Development) (21)
    • SOPC Builder (72)
      • Components Editor (24)
      • GUI (20)
      • Peripheral Components (1)
      • Sys Interconnect Fabric MM (1)
      • Sys Interconnect Fabric Oth (12)
      • Other (SOPC Builder) (14)
    • Other (Embedded) (49)
    • Other ( Embedded ) (49)
  • Development Kits (45)
    • 3rd Party/Partner Kits/Boards (3)
      • All (3)
    • Altera Development Kits (38)
      • Demonstration Design (4)
      • Development Board Files (8)
      • General/Other (23)
      • Reference Design (3)
    • Installation & Licensing (3)
      • Installation (Dev Kits) (3)
    • Other (Development Kits) (1)
    • Other (Dev Kits) (1)
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