8.2.9 100BASE-TX Receive Packet Latency Timing
PMD Input Pair
IDLE
(J/K)
Data
T2.9.1
CRS
T2.9.2
RXD[3:0]
RX_DV
RX_ER
Parameter
T2.9.1
Description
Carrier Sense ON Delay
Receive Data Latency
Notes
Min
Typ Max
Units
bits
100 Mb/s Normal mode
100 Mb/s Normal mode
20
24
T2.9.2
bits
Note: Carrier Sense On Delay is determined by measuring the time from the first bit of the “J” code group to the assertion
of Carrier Sense.
Note: 1 bit time = 10 ns in 100 Mb/s mode
Note: PMD Input Pair voltage amplitude is greater than the Signal Detect Turn-On Threshold Value.
8.2.10 100BASE-TX Receive Packet Deassertion Timing
PMD Input Pair
CRS
DATA
(T/R)
IDLE
T2.10.1
Parameter
T2.10.1
Description
Carrier Sense OFF Delay
Notes
100 Mb/s Normal mode
Min
Typ Max
Units
24
bits
Note: Carrier Sense Off Delay is determined by measuring the time from the first bit of the “T” code group to the deasser-
tion of Carrier Sense.
Note: 1 bit time = 10 ns in 100 Mb/s mode
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