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Table 5-30: Selectable I/O Standards for R
S
OCT With Calibration
This table lists the output termination settings for calibrated OCT on different I/O standards.
Calibrated OCT (Output)
I/O Standard
RZQ
(Ω)
R
S
(Ω)
(12)
100
25/50
3.0 V LVTTL/3.0 V LVCMOS
100
25/50
2.5 V LVCMOS
100
25/50
1.8 V LVCMOS
100
25/50
1.5 V LVCMOS
100
25/50
1.2 V LVCMOS
100
50
SSTL-2 Class I
100
25
SSTL-2 Class II
100
50
SSTL-18 Class I
100
25
SSTL-18 Class II
100
50
SSTL-15 Class I
100
25
SSTL-15 Class II
100
50
1.8 V HSTL Class I
100
25
1.8 V HSTL Class II
100
50
1.5 V HSTL Class I
100
25
1.5 V HSTL Class II
100
50
1.2 V HSTL Class I
100
25
1.2 V HSTL Class II
100
50
Differential SSTL-2 Class I
100
25
Differential SSTL-2 Class II
100
50
Differential SSTL-18 Class I
100
25
Differential SSTL-18 Class II
100
50
Differential SSTL-15 Class I
100
25
Differential SSTL-15 Class II
100
50
Differential 1.8 V HSTL Class I
100
25
Differential 1.8 V HSTL Class II
100
50
Differential 1.5 V HSTL Class I
100
25
Differential 1.5 V HSTL Class II
100
50
Differential 1.2 V HSTL Class I
100
25
Differential 1.2 V HSTL Class II
(12)
Final values are pending silicon characterization.
Altera Corporation
I/O Features in Cyclone V Devices
5-37
R
S
OCT with Calibration in Cyclone V Devices
CV-52005
2014.01.10