Contents
Cyclone II Device Handbook, Volume 1
External Memory Interfacing ....................................................................................................... 2–44
Programmable Drive Strength ..................................................................................................... 2–49
Open-Drain Output ........................................................................................................................ 2–51
Slew Rate Control ........................................................................................................................... 2–51
Bus Hold .......................................................................................................................................... 2–51
Programmable Pull-Up Resistor .................................................................................................. 2–52
Advanced I/O Standard Support ................................................................................................ 2–52
High-Speed Differential Interfaces .............................................................................................. 2–54
Series On-Chip Termination ......................................................................................................... 2–55
I/O Banks ........................................................................................................................................ 2–57
MultiVolt I/O Interface ................................................................................................................. 2–60
Chapter 3. Configuration & Testing
IEEE Std. 1149.1 (JTAG) Boundary Scan Support ............................................................................. 3–1
SignalTap II Embedded Logic Analyzer ............................................................................................ 3–5
Configuration ......................................................................................................................................... 3–6
Operating Modes ................................................................................................................................... 3–6
Configuration Schemes ......................................................................................................................... 3–7
Cyclone II Automated Single Event Upset Detection ...................................................................... 3–7
Custom-Built Circuitry .................................................................................................................... 3–8
Software Interface ............................................................................................................................. 3–8
Chapter 4. Hot Socketing, ESD & Power-On Reset
Introduction ............................................................................................................................................ 4–1
Cyclone II Hot-Socketing Specifications ............................................................................................ 4–1
Devices Can Be Driven before Power-Up ..................................................................................... 4–2
I/O Pins Remain Tri-Stated during Power-Up ............................................................................ 4–2
Signal Pins Do Not Have Internal Current Paths to VCCIO or VCCINT Power Supplies .......... 4–2
Hot-Socketing Feature Implementation in Cyclone II Devices ....................................................... 4–3
ESD Protection ....................................................................................................................................... 4–5
ESD Testing ....................................................................................................................................... 4–5
ESD Circuitry .................................................................................................................................... 4–6
Power-On Reset Circuitry .................................................................................................................... 4–8
Conclusion .............................................................................................................................................. 4–9
Chapter 5. DC Characteristics & Timing Specifications
Operating Conditions ........................................................................................................................... 5–1
Single-Ended I/O Standards .......................................................................................................... 5–4
Differential I/O Standards .............................................................................................................. 5–7
DC Characteristics for Different Pin Types ..................................................................................... 5–10
Power Consumption ........................................................................................................................... 5–12
Timing Specifications .......................................................................................................................... 5–13
Preliminary & Final Timing Specifications ................................................................................. 5–14
High Speed I/O Timing Specifications ....................................................................................... 5–16
Chapter 6. Reference & Ordering Information
Software .................................................................................................................................................. 6–1
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Altera Corporation
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