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82555 — Networking Silicon
50
Datasheet
11.4.8 10BASE-T Normal Link Pulse (NLP) Timing Parameters
11.4.9 Auto-Negotiation Fast Link Pulse (FLP) Timing Parameters
T26a
T
R_CRSL
End of receive frame to falling
edge of CRS
10 Mbps 4.5 bits
T27 T
R_RXDVL
End of receive frame to falling
edge of RXDV
100 Mbps 12 bits
T27a
T
R_RXDVL
End of receive frame to falling
edge of RXDV
10 Mbps 4 bits
Symbol Parameter Conditions Min Typ Max Units
Figure 22. Receive Packet Timing Parameters
RXDV
CRS
Valid Frame Data
RXCLK
Frame On link
T25,T25a
T24,T24a
T26,T26a
T27,T27a
Symbol Parameter Conditions Min Typ Max Units
T28 T
NLP_WID
NLP width 10 Mbps 100 ns
T29 T
NLP_PER
NLP period 10 Mbps 8 24 ms
Figure 23. Normal Link Pulse Timing Parameters
Normal Link Pulse
T29
T28
Symbol Parameter Conditions Min Typ Max Units
T30 T
FLP_WID
FLP width (clock/data) 100 ns
T31 T
FLP_CLK_CLK
Clock pulse to clock pulse period 111 125 139
µ
s
T32 T
FLP_CLK_DAT
Clock pulse to data pulse period 55.5 62.5 69.5
µ
s