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AM79C873 Datasheet(PDF) 34 Page - Advanced Micro Devices

Part # AM79C873
Description  NetPHY??-1 10/100 Mbps Ethernet Physical Layer Single-Chip Transceiver with 100BASE-FX Support
PDF  44 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C873 Datasheet(HTML) 34 Page - Advanced Micro Devices

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34
Am79C873
PRELIMINARY
MII 100BASE-TX Transmit Timing
Figure 7.
MII 100BASE-TX Transmit Timing Diagram
MII 100BASE-TX Transmit Timing Parameters (Half Duplex)
Note:
1. Typical values are at 25 and are for design aid only; not guaranteed and not subject to production testing.
Symbol
Parameter
Conditions
Min
Typical
(Note 1)
Max
Unit
tTXs
TXD[0:3], TX_EN, TX_ER Setup To
TX_CLK High
11
-
-
ns
tTXh
TXD[0:3], TX_EN, TX_ER Hold From
TX_CLK High
0-
-
ns
t1
TX_EN Sampled To CRS Asserted
-
4
-
BT
t2
TX_EN Sampled To CRS De-asserted
-
4
-
BT
tTXpd
TX_EN Sampled To TPO Out (Tx Latency)
-
8
-
BT
tTXr/f
100TX Driver Rise/Fall Time
90% To 10%, Into
100
Ω Differential
345
ns
TX_CLK
tTXh
t1
tTXpd
tTXr/f
TXD [0:3],
TX_EN, TX_ER
CRS
100TX
±
tTXs
t2
22164A-9



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