Datasheet

Symbol
T2.24.1
T2.24.3T2.24.2
T2.24.4
X1
TXD[1:0]
TX_EN
PMD Output
Pair
Valid data
DP83640
SNOSAY8E –SEPTEMBER 2007–REVISED APRIL 2013 www.ti.com
4.28 AC Specifications — RMII Transmit Timing (Slave Mode)
Parameter Description Notes Min Typ Max Units
T2.24.1 X1 Clock Period 50 MHz Reference Clock 20 ns
T2.24.2 TXD[1:0], TX_EN, Data Setup to X1 rising edge 4 ns
T2.24.3 TXD[1:0], TX_EN, Data Hold from X1 rising edge 2 ns
T2.24.4 X1 Clock to PMD Output Pair Latency (100 Mb)
(1)
100BASE-TX or 100BASE-FX 11 bits
(1) Latency measurement is made from the X1 rising edge to the first bit of symbol.
Figure 4-24. RMII Transmit Timing (Slave Mode)
34 Electrical Specifications Copyright © 2007–2013, Texas Instruments Incorporated
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