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Datasheet 51
Networking Silicon — 82555
11.4.10 Reset Timing Parameters
11.4.11 X1 Clock Specifications
T33 T
FLP_BUR_NUM
Number of pulses in one burst 17 33
T34 T
FLP_BUR_WID
FLP Burst width 2 ms
T35 T
FLP_BUR_PER
FLP burst period 8 24 ms
Symbol Parameter Conditions Min Typ Max Units
Figure 24. Fast Link Pulse Timing Parameters
Fast Link Pulse
T31
T30
T30
Clock Pulse
Data Pulse
Clock Pulse
FLP Bursts
T34
T35
Symbol Parameter Conditions Min Typ Max Units
T36 T
RST_WID
Reset pulse width 500 ns
T37 T
PUP_RST
Power-up to falling edge of reset 500
µ
s
Figure 25. Reset Timing Parameters
Power Up
(
VCC
)
RESET
T37
T36
Symbol Parameter Conditions Min Typ Max Units
T38 T
X1_DC
X1 duty cycle 40 60 %
T39 T
X1_PR
X1 period ±50 PPM 40 ns