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DM9161 датащи(PDF) 45 Page - List of Unclassifed Manufacturers |
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DM9161 датащи(HTML) 45 Page - List of Unclassifed Manufacturers |
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45 / 47 page ![]() DM9161 10/100 Mbps Fast Ethernet Physical Layer Single Chip Transceiver Final 45 Version: DM9161-DS-F02 May 10,2002 10.7 Magnetics Selection Guide Refer to Table 10-2 for transformer requirements. Transformers meeting these requirements are available from a variety of magnetic manufacturers. Designers should test and qualify all magnetics before using them in an application. The transformers listed in Table 10-2 are electrical equivalents, but may not be pin-to-pin equivalents. Manufacturer Part Number Pulse Engineering PE-68515, H1078, H1012 , H1102 Delta LF8200, LF8221X YCL 20PMT04, 20PMT05 Halo TG22-3506ND, TD22-3506G1, TG22-S010ND TG22-S012ND Nano Pulse Inc. NPI 6181-37, NPI 6120-30, NPI 6120-37 NPI 6170-30 Fil-Mag PT41715 Bel Fuse S558-5999-01 Valor ST6114, ST6118 Macronics HS2123, HS2213 Table 10-2 10.8 Crystal Selection Guide A crystal can be used to generate the 25MHz reference clock instead of an oscillator. The crystal must be a fundamental type, series-resonant, connected to XT1 and XT2, and shunt to ground with 22pF capacitors. (See Figure 6.) Figure 10-6 Crystal Circuit Diagram |
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