dp83840a National Semiconductor Corporation, dp83840a Datasheet - Page 31
dp83840a
Manufacturer Part Number
dp83840a
Description
10/100 Mb/s Ethernet Physical Layer
Manufacturer
National Semiconductor Corporation
Datasheet
1.DP83840A.pdf
(89 pages)
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Version A
3.0 Functional Description
20 MHz
(50ppm)
FIGURE 14. 10BASE-T Twisted Pair Smart Squelch Operation
(OSCIN)
X1
(Continued)
FIGURE 15. X1 and X2 Oscillator Module
Alternatively, a 20MHz crystal (with nominal 12pF loading)
can be utilized in place of the oscillator. When not used, X1 should
be pulled-up to Vcc (4.7k recommended).
Twisted Pair Squelch Operation
31
(OSCOUT)
X2
National Semiconductor
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