
RS OCT without Calibration in Cyclone V Devices
The Cyclone V devices support RS OCT for single-ended and voltage-referenced I/O standards. RS OCT
without calibration is supported on output only.
Table 5-29: Selectable I/O Standards for RS OCT Without Calibration
This table lists the output termination settings for uncalibrated OCT on different I/O standards.
Uncalibrated OCT (Output)
I/O Standard
RS (Ω)
25/50
3.0 V LVTTL/3.0 V LVCMOS
25/50
2.5 V LVCMOS
25/50
1.8 V LVCMOS
25/50
1.5 V LVCMOS
25/50
1.2 V LVCMOS
50
SSTL-2 Class I
25
SSTL-2 Class II
50
SSTL-18 Class I
25
SSTL-18 Class II
50
SSTL-15 Class I
25
SSTL-15 Class II
50
1.8 V HSTL Class I
25
1.8 V HSTL Class II
50
1.5 V HSTL Class I
25
1.5 V HSTL Class II
50
1.2 V HSTL Class I
25
1.2 V HSTL Class II
50
Differential SSTL-2 Class I
25
Differential SSTL-2 Class II
50
Differential SSTL-18 Class I
25
Differential SSTL-18 Class II
50
Differential SSTL-15 Class I
25
Differential SSTL-15 Class II
50
Differential 1.8 V HSTL Class I
25
Differential 1.8 V HSTL Class II
50
Differential 1.5 V HSTL Class I
Altera Corporation
I/O Features in Cyclone V Devices
5-35
RS OCT without Calibration in Cyclone V Devices
CV-52005
2014.01.10