Ideal Strobe Position
RxIN+ or RxIN-
~1.4V
C
RxIN- or RxIN+
MIN
RSKM
MAX
MIN
RSKM
MAX
MIN
MAX
Tpposn
Rsposn
Tpposn+1
C - Setup and Hold Time (Internal data sampling window) defined by Rspos (receiver input stroke position min and max
Tspos - Transmitter output pulse position (min and max)
RSKM > Cable Skew (type, length) + Source Clock Jitter (cycle to cycle)1 + ISI (Inter-symbol interference)2
Cable Skew - typically 10 ps-40 ps per foot, media dependent
Notes:
1. Cycle-to-cycle jitter is less than 250 ps at 50MHz.
2. ISI is dependent on interconnect length, may be zero.
~1.0V
Figure 11. Receiver LVDS Skew Margin
10