82544EI Datasheet, PDF (32/52 Pages) Intel Corporation – Gigabit Ethernet Controller

82544EI Gigabit Ethernet Controller Networking Silicon Datasheet
Figure 11. Link Interface Rise/Fall Timing
2.0 V
0.8 V
TR
TF
4.5.2.2 Link Interface Transmit Timing
Figure 12. Transmit Interface Timing
TX_CLOCK
1.4V
TSU
TH
TX_DATA[9:0]
Valid Data
TPERIOD
Table 16. Transmit Interface Timing
Symbol
Parameter
T_PERIOD
GTX_CLK Period^a
TBI Mode (1000 Mb/s)
T_SETUP
T_HOLD
T_DUTY
Data Setup to Rising GTX_CLK
Data Hold from Rising GTX_CLK
GTX_CLK Duty Cycle
a. ±100 ppm tolerance on GTX_CLK
Min
Typ
Max
Units
8
ns
2.5
ns
1.0
ns
40
60
%
28
Datasheet