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EP2SGX60CF780C4N Datasheet, PDF (181/316 Pages) Altera Corporation – Support for numerous single-ended and differential I/O standards | |||
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Figure 4â2. 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 4â3 and 4â4 show differential receiver input and transmitter
output waveforms, respectively.
Figure 4â3. Receiver Input Waveform
Single-Ended Waveform
VID
VCM
Positive Channel (p)
Negative Channel (n)
Ground
Differential Waveform
VID
VID (diff peak-peak) = 2 x VID (single-ended)
pân=0V
VID
Altera Corporation
June 2009
4â11
Stratix II GX Device Handbook, Volume 1
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