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 TR_CRSL End of receive frame to falling
edge of CRS 10 Mbps 4.5 bits
T27 TR_RXDVL End of receive frame to falling
edge of RXDV 100 Mbps 12 bits
T27a TR_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 TNLP_WID NLP width 10 Mbps 100 ns
T29 TNLP_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 TFLP_WID FLP width (clock/data) 1 00 ns
T31 TFLP_CLK_CLK Clock pulse to clock pulse period 111 125 139 µs
T32 TFLP_CLK_DAT Clock pulse to data pulse period 55.5 62.5 69.5 µs