LAN83C183 Datasheet, PDF (97/113 Pages) SMSC Corporation – FAST ETHERNET PHYSICAL LAYER DEVICE

5.3.4 Collision and JAM Timing Characteristics
Table 5.11 shows the Collision and JAM timing parameters. See Figure 5.9 through
Figure 5.14 for the associated timing diagrams.
Table 5.11 Collision and Jam Timing
LIMIT
SYM
PARAMETER
t51 Rcv Packet Start To
COL Assert Time
t52 Rcv Packet Stop To
COL Deassert Time
t53 Xmt Packet Start To
COL Assert Time
t54 Xmt Packet Stop To
COL Deassert Time
t55 PLEDn Delay Time
t56 PLEDn Pulse Width
t57 Collision Test Assert Time
t58 Collision Test Deassert Time
t59 CRS Assert To Transmit
JAM Packet Start During JAM
t60¹ COL Rise And Fall Time
1. Timing not shown
MIN TYP MAX UNIT
CONDITIONS
200
ns 100 Mbits/s
700
ns 10 Mbits/s
130
240
ns 100 Mbits/s
300
ns 10 Mbits/s
200
ns 100 Mbits/s
700
ns 10 Mbits/s
240
ns 100 Mbits/s
300
ns 10 Mbits/s
25
ms PLEDn programmed for collision
80
105
ms PLEDn programmed for collision
5120
ns
40
ns
300
ns 100 Mbits/s
800
ns 10 Mbits/s
10
ns
Figure 5.9 Collision Timing, Receive 100 Mbits/s
MII 100 Mbits/s
TPO+/−
I
DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA DATA
TPI+/−
I
COL
PLEDn
I
I
I
J
K DATA DATA DATA DATA T
R
I
I
t₅₁
t₅₂
t₅₅
t₅₆
FBI 100 Mbits/s
Same as MII 100 Mbits
SMSC DS – LAN83C183
97
Rev. 12/14/2000