EP2SGX130GF1508C4 Datasheet, PDF (181/316 Pages) Altera Corporation – Section I. Stratix II GX Device Data Sheet

Figure 4–2. Lock Time Parameters for Automatic Mode
CDR status
LTR
r x_freqlocked
r x_dataout
Invalid data
DC and Switching Characteristics
LTD
Valid data
Data lock time from rx_freqlocked
Figures 4–3 and 4–4 show differential receiver input and transmitter
output waveforms, respectively.
Figure 4–3. Receiver Input Waveform
Single-Ended Waveform
V_ID
V_CM
Positive Channel (p)
Negative Channel (n)
Ground
Differential Waveform
V_ID
VID (diff peak-peak) = 2 x VID (single-ended)
p−n=0V
V_ID
Altera Corporation
June 2009
4–11
Stratix II GX Device Handbook, Volume 1