Datasheet

TX_CL
K
TXD[3:0
]
Valid Data
T2.4.2 T2.4.3
TX_EN
T2.4.1 T2.4.1
MDC
MDIO (output)
MDC
MDIO (input)
T2.3.4 T2.3.1
Valid Data
T2.3.2 T2.3.3
DP83640
www.ti.com SNOSAY8E –SEPTEMBER 2007–REVISED APRIL 2013
4.7 AC Specifications — MII Serial Management Timing
Parameter Description Notes Min Typ Max Units
T2.3.1 MDC to MDIO (Output) Delay Time 0 20 ns
T2.3.2 MDIO (Input) to MDC Setup Time 10 ns
T2.3.3 MDIO (Input) to MDC Hold Time 10 ns
T2.3.4 MDC Frequency 2.5 25 MHz
Figure 4-3. MII Serial Management Timing
4.8 AC Specifications — 100 Mb/s MII Transmit Timing
Parameter Description Notes Min Typ Max Units
T2.4.1 TX_CLK High/Low Time 100 Mb/s Normal mode 16 20 24 ns
T2.4.2 TXD[3:0], TX_EN Data Setup to 100 Mb/s Normal mode 10 ns
TX_CLK
T2.4.3 TXD[3:0], TX_EN Data Hold from 100 Mb/s Normal mode 0 ns
TX_CLK
Figure 4-4. 100 Mb/s MII Transmit Timing
Copyright © 2007–2013, Texas Instruments Incorporated Electrical Specifications 23
Submit Documentation Feedback
Product Folder Links: DP83640