8.0 Electrical Specifications (Continued)
8.6.3 10 Mb/s Receive Timing (Start of Packet)
Parameter
T1
Description
Notes
Min
Typ
Max
Units
Carrier Sense Turn On Delay
(RXI+/- to CRS)
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
10 Mb/s nibble mode
10 Mb/s serial mode
1
µs
µs
µs
µs
1
T2
T3
T4
T5
Decoder Acquisition Time
Receive Data Latency
SFD Latency
2.6
2.2
17.3 bits
10
10
0.8
20
60
bits
bits
bits
ns
RX_CLK to RXD Delay Time
-10
-10
ns
Note: 10 Mb/s receive Data Latency is measured from first bit of preamble on the wire to the assertion of RX_DV
Note: 1 bit time = 100ns in 10 Mb/s mode for both nibble and serial operation.
1st SFD bit decoded
1
0
1
RXI+/-
T1
CRS
T5
T2
RX_CLK
T4
RXD
T3
RX_DV
Version A
81
TI [ TEXAS INSTRUMENTS ]
