EP4SE360F35I4 Datasheet, PDF (213/432 Pages) Altera Corporation – This section provides a complete overview of all features relating to the Stratix IV device family, which is the most architecturlly advanced

Chapter 6: I/O Features in Stratix IV Devices
Termination Schemes for I/O Standards
6–39
1 In Stratix IV devices, you cannot use series and parallel OCT simultaneously. For
more information, refer to “Dynamic On-Chip Termination” on page 6–29.
Figure 6–27. SSTL I/O Standard Termination
Termination
SSTL Class I
External
On-Board
Termination
Transmitter
VTT
50 Ω
25 Ω
50 Ω
VREF
Receiver
OCT
Transmit
Stratix IV
Series OCT 50 Ω
Transmitter
VTT
50 Ω
50 Ω8
VREF
Receiver
Transmitter
Stratix IV
Series OCT 25 Ω
Transmitter
SSTL Class II
VTT
VTT
50 Ω
25 Ω
50 Ω
50 Ω
VREF
VTT
VTT
50 Ω 50 Ω
50 Ω
VREF
Receiver
Receiver
OCT
Receive
Transmitter
25 Ω
50 Ω
VREF
VCCIO Stratix IV
Parallel OCT
100 Ω
100 Ω
Receiver
OCT
in Bi-
Directional
Pins
VCCIO
Series OCT
50 Ω
100 Ω
100 Ω
50 Ω
Stratix IV
VCCIO
100 Ω
100 Ω
Series
OCT 50 Ω
Stratix IV
Transmitter
VTT
25 Ω
50 Ω
50 8
VREF
VCCIO
Stratix IV
Parallel OCT
100 Ω
100 Ω
Receiver
VCCIO
Series OCT
25 Ω
100 Ω
100 Ω
50 Ω
Stratix IV
VCCIO
100 Ω
100 Ω
Series
OCT 25 Ω
Stratix IV
September 2012 Altera Corporation
Stratix IV Device Handbook
Volume 1