am79c875 Advanced Micro Devices, am79c875 Datasheet - Page 39

• Manufacturer Part Number: am79c875
• Description: Netphy ?lp Low Power Quad 10/100-tx/fx Ethernet Transceiver
• Manufacturer: Advanced Micro Devices

SWITCHING CHARACTERISTICS
System Clock Signal
Notes:
1. Parametric values are the same for Commercial and Industrial devices.
MLT-3 Signals
t
t
t
t
t
t
t
t
t
t
CLK
CLKH
CLKL
CLR
CLF
TXR
TXF
TXRFS
TXDCD
TXJ
Symbol
Symbol
Parameter Description
Rise Time of MLT-3 Signal
Fall Time of MLT-3 Signal
Rise Time and Fall Time Symmetry of MLT-3 Signal
Duty Cycle Distortion Peak to Peak
Transmit Jitter Using Scrambled Idle Signals
Parameter Description
REFCLK Period
REFCLK Width HIGH
REFCLK Width LOW
REFCLK Rise Time
REFCLK Fall Time
TX_CLK
TX±
t
TXR
Figure 17. MLT-3 Test Waveform
1
Figure 16. Clock Signal
t
CLKH
16 ns
0
t
TXF
t
Am79C875
CLK
1
t
CLKL
t
XTDCD
0
t
CLF
1
19.999
Min.
0
9
9
-
-
Min.
3.0
3.0
-
-
-
20%
80%
1
t
CLR
t
XTDCD
20.001
Max.
11
11
5
5
Max.
5.0
5.0
0.5
1.4
5
22236G-18
22236G-19
Unit
ns
ns
ns
ns
ns
Unit
ns
ns
ns
ns
%
39