Intel 82555, Datasheet

Page: 53 / 58

Datasheet 49
Networking Silicon — 82555
11.4.6 Jabber Timing Parameters
11.4.7 Receive Packet Timing Parameters
Figure 20. Squelch Test Timing Parameters
TXEN
C O L
T X C L K
T 2 0
T 2 1
Symbol Parameter Conditions Min Typ Max Units
T22 T
JAB_ON
Jabber turn-on delay (TXEN
asserted to end of transmit
frame)
10 Mbps 26 ms
T23 T
JAB_OFF
Jabber turn-off delay (TXEN de-
asserted to falling edge of COL)
10 Mbps 410 ms
Figure 21. Jabber Timing Parameters
TXEN
C O L
T D P / T D N
T 2 2
T 2 3
Symbol Parameter Conditions Min Typ Max Units
T24 T
R_CRSH
Start of receive frame to rising
edge of CRS
100 Mbps 11 13 bits
T24a
T
R_CRSH
Start of receive frame to rising
edge of CRS
10 Mbps 3 5 bits
T25 T
R_RXDVH
Start of receive frame to rising
edge of RXDV
100 Mbps 15 bits
T25a
T
R_RXDVH
Start of receive frame to rising
edge of RXDV
10 Mbps 22 bits
T26 T
R_CRSL
End of receive frame to falling
edge of CRS
100 Mbps 14 16 bits