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AM79C875KC Datenblatt(PDF) 39 Page - Advanced Micro Devices

Teilenummer AM79C875KC
Bauteilbeschribung  NetPHY??4LP Low Power Quad 10/100-TX/FX Ethernet Transceiver
PDF  48 Pages
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Hersteller  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C875KC Datenblatt(HTML) 39 Page - Advanced Micro Devices

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Am79C875
39
SWITCHING CHARACTERISTICS
System Clock Signal
Symbol
Parameter Description
Min.
Max.
Unit
tCLK
REFCLK Period
19.999
20.001
ns
tCLKH
REFCLK Width HIGH
9
11
ns
tCLKL
REFCLK Width LOW
9
11
ns
tCLR
REFCLK Rise Time
-
5
ns
tCLF
REFCLK Fall Time
-
5
ns
Notes:
1. Parametric values are the same for Commercial and Industrial devices.
tCLR
80%
20%
tCLF
tCLKH
tCLKL
tCLK
TX_CLK
22236G-18
Figure 16. Clock Signal
MLT-3 Signals
Symbol
Parameter Description
Min.
Max.
Unit
tTXR
Rise Time of MLT-3 Signal
3.0
5.0
ns
tTXF
Fall Time of MLT-3 Signal
3.0
5.0
ns
tTXRFS
Rise Time and Fall Time Symmetry of MLT-3 Signal
-
5
%
tTXDCD
Duty Cycle Distortion Peak to Peak
-
0.5
ns
tTXJ
Transmit Jitter Using Scrambled Idle Signals
-
1.4
ns
tTXR
tTXF
16 ns
TX
±
tXTDCD
tXTDCD
1
0
1
0
1
0
1
22236G-19
Figure 17. MLT-3 Test Waveform



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