EP1S20F484C6N Altera, EP1S20F484C6N Datasheet - Page 298

• Manufacturer Part Number: EP1S20F484C6N
• Description: IC STRATIX FPGA 20K LE 484-FBGA
• Manufacturer: Altera
• Series: Stratix®r

Specifications of EP1S20F484C6N

• Number Of Logic Elements/cells: 18460
• Number Of Labs/clbs: 1846
• Total Ram Bits: 1669248
• Number Of I /o: 361
• Voltage - Supply: 1.425 V ~ 1.575 V
• Mounting Type: Surface Mount
• Operating Temperature: 0°C ~ 85°C
• Package / Case: 484-FBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of Gates: -

Contents
Chapter 5. High-Speed Differential I/O Interfaces in Stratix Devices
vi
Drive Strength ...................................................................................................................................... 4–26
Hot Socketing ....................................................................................................................................... 4–27
I/O Termination .................................................................................................................................. 4–28
I/O Pad Placement Guidelines .......................................................................................................... 4–30
Power Source of Various I/O Standards ......................................................................................... 4–38
Quartus II Software Support .............................................................................................................. 4–38
Conclusion ............................................................................................................................................ 4–42
More Information ................................................................................................................................ 4–42
References ............................................................................................................................................. 4–42
Introduction ............................................................................................................................................ 5–1
Stratix I/O Banks ................................................................................................................................... 5–1
Principles of SERDES Operation ......................................................................................................... 5–6
Using SERDES to Implement DDR ................................................................................................... 5–13
Using SERDES to Implement SDR .................................................................................................... 5–14
Differential I/O Interface & Fast PLLs ............................................................................................. 5–16
Mixing Voltage Referenced & Non-Voltage Referenced Standards ....................................... 4–25
Standard Current Drive Strength ................................................................................................. 4–26
Programmable Current Drive Strength ...................................................................................... 4–27
DC Hot Socketing Specification ................................................................................................... 4–28
AC Hot Socketing Specification ................................................................................................... 4–28
Voltage-Referenced I/O Standards ............................................................................................. 4–28
Differential I/O Standards ............................................................................................................ 4–29
Differential Termination (RD) ...................................................................................................... 4–29
Transceiver Termination ............................................................................................................... 4–30
Differential Pad Placement Guidelines ....................................................................................... 4–30
VREF Pad Placement Guidelines ................................................................................................. 4–31
Output Enable Group Logic Option in Quartus II .................................................................... 4–34
Toggle Rate Logic Option in Quartus II ...................................................................................... 4–35
DC Guidelines ................................................................................................................................. 4–35
Compiler Settings ........................................................................................................................... 4–38
Device & Pin Options .................................................................................................................... 4–39
Assign Pins ...................................................................................................................................... 4–39
Programmable Drive Strength Settings ...................................................................................... 4–40
I/O Banks in the Floorplan View ................................................................................................. 4–40
Auto Placement & Verification of Selectable I/O Standards ................................................... 4–41
Stratix Differential I/O Standards ................................................................................................. 5–2
Stratix Differential I/O Pin Location ............................................................................................. 5–5
Stratix Differential I/O Receiver Operation ................................................................................. 5–7
Stratix Differential I/O Transmitter Operation ........................................................................... 5–9
Transmitter Clock Output ............................................................................................................. 5–10
Divided-Down Transmitter Clock Output ................................................................................. 5–10
Center-Aligned Transmitter Clock Output ................................................................................ 5–11
SDR Transmitter Clock Output .................................................................................................... 5–12
Clock Input & Fast PLL Output Relationship ............................................................................ 5–18
Fast PLL Specifications .................................................................................................................. 5–20
Stratix Device Handbook, Volume 2
Altera Corporation