8.0 Electrical Specifications (Continued)
8.5.5 100 Mb/s Receive Packet Timing
Parameter
Description
Notes
Min
Typ Max Units
T1
Carrier Sense on Delay
100 Mb/s Translational mode (Normal)
100 Mb/s Transparent mode (BP_4B5B)
100 Mb/s Translational mode (Normal)
100 Mb/s Transparent mode (BP_4B5B)
100 Mb/s Phaser mode (BP_ALIGN)
175
175
21
ns
ns
T2
Receive Data Latency
bits
bits
bits
21
10
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.
1 bit time = 10ns in 100 Mb/s mode
Data
IDLE
(J/K)
RD+/-
T1
CRS
T2
RXD[3:0]
RX_DV
RX_ER/RXD[4]
8.5.6 100 Mb/s Receive Packet Timing
Parameter
Description
Notes
Min
Typ Max Units
T1
Carrier Sense off Delay
100 Mb/s Translational mode (Normal)
100 Mb/s Transparent mode (BP_4B5B)
135
135
ns
ns
Note: Carrier Sense Off Delay is determined by measuring the time from the first bit of the “IDLE” code group to the de-assertion of Carrier Sense.
1 bit time = 10ns in 10 Mb/s mode
RD+/-
Data
IDLE
(T/R)
T1
CRS
Version A
78
TI [ TEXAS INSTRUMENTS ]
