Datasheet

Figure 32-40. 100 Mb/s MII Receive Timing
EN0RXCK
EN0RXDn
EN0RXDV
EN0RXER
Valid Data
N30 N31
N33N32
Table 32-57. 100Base-TX Transmit Timing (t
R/F
and Jitter)
UnitMaxNomMinParameter NameParameterParameter No.
ns543100 Mb/s PMD output pair t
R
and t
F
a
T
RF
N38
ps500--100 Mb/s t
R
and t
F
symmetry
bc
T
RF_MM
ns1.4--100 Mb/s PMD Output Pair Transmit
Jitter
T
RF_JTTR
N39
a. Rise and fall times taken at 10% and 90% of the +1 or -1 amplitude.
b. Normal mismatch is the difference between the maximum and minimum of all rise and fall times
c. Choice of Ethernet transformer magnetics can affect this parameter.
Figure 32-41. 100 Base-TX Transmit Timing
N39
N39
PMD Output Pair
Eye Pattern
N38
PMD Output Pair
90%
10%
90%
10%
90%
10%
90%
10%
N38
N38 N38
+1 rise +1 fall
-1 fall -1 rise
December 13, 20132150
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Electrical Characteristics