EP3SE50F780I3N Altera, EP3SE50F780I3N Datasheet - Page 256

• Manufacturer Part Number: EP3SE50F780I3N
• Description: Stratix III
• Manufacturer: Altera

Termination Schemes for I/O Standards
Figure 7–21. Stratix III SSTL I/O Standard Termination
Note to
(1)
7–38
Stratix III Device Handbook, Volume 1
OCT
in Bi-
Directional
Pins (1)
Termination
External
On-Board
Termination
OCT
Transmit
OCT
Receive
In Stratix III devices, series and parallel OCT cannot be used simultaneously. For more information, refer to
“Dynamic On-Chip Termination” on page
Figure
Stratix III
Series OCT 50 Ω
Series OCT
50 Ω
Stratix III
Transmitter
Transmitter
7–21:
Transmitter
V CCIO
100 Ω
100 Ω
SSTL Class I
25 Ω
25 Ω
50 Ω
50 Ω
V REF
50 Ω
50 Ω
50 Ω
V REF
V REF
V TT
50 Ω
V TT
V CCIO
Stratix III
V CCIO
100 Ω
100 Ω
100 Ω
100 Ω
Receiver
Receiver
7–28.
Stratix III
Parallel OCT
Series OCT
50 Ω
Receiver
Series OCT
25 Ω
Stratix III
Series OCT
Stratix III
Transmitter
Transmitter
Transmitter
25 Ω
V CCIO
100 Ω
100 Ω
25 Ω
25 Ω
50 Ω
V TT
SSTL Class II
50 Ω
V TT
50 Ω
V TT
50 Ω
50 Ω
50 Ω
50 Ω
V REF
50 Ω
V REF
V REF
50 Ω
V TT
V TT
Altera Corporation
V CCIO
Stratix III
V CCIO
November 2007
100 Ω
100 Ω
100 Ω
100 Ω
Receiver
Receiver
Receiver
Series OCT
25 Ω
Stratix III
Parallel OCT