Datasheet

9.0 Electrical Specifications (Continued)

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9.4.11 100BASE-FX Receive Packet Deassertion Timing

Note: Carrier Sense Off Delay is determined by measuring the time from the first bit of the “T” code group to the deassertion of Carrier Sense.

Note: 1 bit time = 10 ns in 100 Mb/s mode.

9.5 10 Mb/s AC Timing

9.5.12 10 Mb/s MII Transmit Timing

Parameter Description Notes Min Typ Max Units

T4.11.1 Carrier Sense Off Delay 100 Mb/s Normal mode 21.5 bits

Parameter Description Notes Min Typ Max Units

T5.12.1 TXD[3:0], TX_EN Data Setup to TX_CLK 10 Mb/s Nibble mode 25 ns

TXD0 Data Setup to TX_CLK 10 Mb/s Serial mode 25 ns

T5.12.2 TXD[3:0], TX_EN Data Hold from TX_CLK 10 Mb/s Nibble mode -1 ns

TXD0 Data Hold from TX_CLK 10 Mb/s Serial mode -1 ns

CRS

FXRD+/-

(T/R)

IDLE

DATA

T4.11.1

RXD[3:0]

RX_DV

RX_ER/RXD[4]

TX_CLK

TXD[3:0]

TX_EN

TX_ER

VALID DATA

T5.12.