Datasheet

9.0 Electrical Specifications (Continued)
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9.5.13 10 Mb/s MII Receive Timing
9.5.14 10BASE-T Transmit Timing (Start of Packet)
Note: 1 bit time = 100 ns in 10 Mb/s mode for both nibble and serial operation.
Parameter Description Notes Min Typ Max Units
T5.13.1 RX_EN to RX_CLK, RXD[3:0], RX_DV Active All 10 Mb/s modes 10 ns
T5.13.2 RX_EN to RX_CLK, RXD[3:0], RX_DV TRI-
STATE
All 10 Mb/s modes 25 ns
T5.13.3 RX_CLK to RXD[3:0], RX_DV, RX_ER Delay 10 Mb/s Nibble mode 190 210 ns
RX_CLK to RXD[3:0], RX_DV, RX_ER Delay 10 Mb/s Serial mode 40 60 ns
T5.13.4 RX_CLK Duty Cycle All 10 Mb/s modes 35 65 %
Parameter Description Notes Min Typ Max Units
T5.14.1 Transmit Enable Setup Time from the
Rising Edge of TX_CLK
10 Mb/s Nibble mode 25 ns
10 Mb/s Serial mode 25 ns
T5.14.2 Transmit Data Setup Time from the
Rising Edge of TX_CLK
10 Mb/s Nibble mode 25 ns
10 Mb/s Serial mode 25 ns
T5.14.3 Transmit Data Hold Time from the
Rising Edge of TX_CLK
10 Mb/s Nibble mode -1 ns
10 Mb/s Serial mode -1 ns
T5.14.4 Transmit Output Delay from the
Rising Edge of TX_CLK
10 Mb/s Nibble mode 6.8 bits
10 Mb/s Serial mode 2.5 bits
RX_CLK
RXD[3:0]
RX_DV
RX_ER
VALID DATA
RX_EN
T5.13.1
T5.13.
2
T5.13.3
T5.13.4
TX_CLK
TX_EN
TXD
TPTD+/-
T5.14.
1
T5.14.2
T5.14.
3
T5.14.4