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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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VSC8658 데이터시트(PDF) 17 Page - Microsemi Corporation |
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VSC8658 데이터시트(HTML) 17 Page - Microsemi Corporation |
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17 / 95 page  Functional Descriptions VMDS-10242 VSC8658 Datasheet Revision 4.1 9 Figure 4 • SGMII MAC Interface 4.1.3 All Modes Cat5 Media Interface The VSC8658 device twisted pair interface is compliant with the IEEE standard 802.3-2000. Unlike many other gigabit PHYs, the VSC8658 device uses fully integrated, passive components (required to connect the PHY’s Cat5 interface to an external 1:1 transformer). The following illustration shows the connections. Figure 5 • Cat5 Media Interface SGMII MAC VSC8658 PHY Port_n MAC_TDP MAC_TDN MAC_RDN MAC_RDP RDN RDP TDN TDP 100 Ω or 150 Ω 0.1 µF 0.1 µF 100 Ω or 150 Ω 100 Ω or 150 Ω TCN TCP TXVP_A_n 1 RJ-45 VSC8658 PHY Port_n TXVN_A_n TXVP_B_n TXVN_B_n TXVP_C_n TXVN_C_n TXVP_D_n TXVN_D_n Transformer 0.1 µF 0.1 µF 0.1 µF 0.1 µF 2 3 6 4 5 7 8 A+ A– B+ B– C+ C– D+ D– 1000 pF, 2 kV 75 Ω 75 Ω 75 Ω 75 Ω |
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