EP2C20F256C8N Datasheet, PDF (328/470 Pages) Altera Corporation – Cyclone II Device Handbook, Volume 1

I/O Standards Support
Figure 11–4. Receiver Input Waveforms for the LVDS Differential I/O Standard
Single-Ended Waveform
V_ID
V_ICM
Positive Channel (p) = V_OH
Negative Channel (n) = V_OL
Ground
Differential Waveform (Mathematical Function of Positive & Negative Channel)
VID
VID
0V
VID
p − n (1)
Note to Figure 11–4:
(1) The p – n waveform is a function of the positive channel (p) and the negative channel (n).
Figure 11–5. Transmitter Output Waveform for the LVDS Differential I/O Standard Note (2)
Single-Ended Waveform
V_OS
V_OD
Positive Channel (p) = V_OH
Negative Channel (n) = V_OL
Ground
Differential Waveform (Mathematical Function of Positive & Negative Channel)
VOD
VOD
0V
p − n (2)
Notes to Figure 11–5:
(1) The V_OD specifications apply at the resistor network output.
(2) The p – n waveform is a function of the positive channel (p) and the negative channel (n).
11–6
Cyclone II Device Handbook, Volume 1
Altera Corporation
February 2007