Figure 10. auto-negotiation and parallel detect – Intel 82555 User Manual
Page 41
Datasheet
37
Networking Silicon — 82555
Negotiation or Parallel Detection with no data packets being transmitted. Connection is then
established either by FLP exchange or Parallel Detection. The 82555 will look for both FLPs and
link integrity pulses. The following diagram illustrates this process.
Figure 10. Auto-Negotiation and Parallel Detect
Force_Fail
Ability detect either by
parallel detect or auto-
negotiation.
10Base-T or
100Base-TX Link
Ready
FLP capable
LINK PASS
Parallel Detection
Auto-Negotiation
Look at Link Pulse;
Auto-Negotiation capable = 0
Auto-Negotiation capable = 1
Ability Match
Auto-Negotiation Complete bit set
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