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SI-50170 Scheda tecnica(PDF) 10 Page - Micrel Semiconductor |
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SI-50170 Scheda tecnica(HTML) 10 Page - Micrel Semiconductor |
10 / 54 page Micrel, Inc. KSZ8041NL/RNL September 2010 10 M9999-090910-1.4 Pin Description – KSZ8041NL Pin Number Pin Name Type (1) Pin Function 1 GND Gnd Ground 2 VDDPLL_1.8 P 1.8V analog VDD 3 VDDA_3.3 P 3.3V analog VDD 4 RX- I/O Physical receive or transmit signal (- differential) 5 RX+ I/O Physical receive or transmit signal (+ differential) 6 TX- I/O Physical transmit or receive signal (- differential) 7 TX+ I/O Physical transmit or receive signal (+ differential) 8 XO O Crystal feedback This pin is used only in MII mode when a 25 MHz crystal is used. This pin is a no connect if oscillator or external clock source is used, or if RMII mode is selected. 9 XI / REFCLK I Crystal / Oscillator / External Clock Input MII Mode: 25MHz +/-50ppm (crystal, oscillator, or external clock) RMII Mode: 50MHz +/-50ppm (oscillator, or external clock only) 10 REXT I/O Set physical transmit output current Connect a 6.49K Ω resistor in parallel with a 100pF capacitor to ground on this pin. See KSZ8041NL reference schematics. 11 MDIO I/O Management Interface (MII) Data I/O This pin requires an external 4.7K Ω pull-up resistor. 12 MDC I Management Interface (MII) Clock Input This pin is synchronous to the MDIO data interface. 13 RXD3 / PHYAD0 Ipu/O MII Mode: Receive Data Output[3] (2) / Config Mode: The pull-up/pull-down value is latched as PHYADDR[0] during power-up / reset. See “Strapping Options” section for details. 14 RXD2 / PHYAD1 Ipd/O MII Mode: Receive Data Output[2] (2) / Config Mode: The pull-up/pull-down value is latched as PHYADDR[1] during power-up / reset. See “Strapping Options” section for details. 15 RXD1 / RXD[1] / PHYAD2 Ipd/O MII Mode: Receive Data Output[1] (2) / RMII Mode: Receive Data Output[1] (3) / Config Mode: The pull-up/pull-down value is latched as PHYADDR[2] during power-up / reset. See “Strapping Options” section for details. 16 RXD0 / RXD[0] / DUPLEX Ipu/O MII Mode: Receive Data Output[0] (2) / RMII Mode: Receive Data Output[0] (3) / Config Mode: Latched as DUPLEX (register 0h, bit 8) during power-up / reset. See “Strapping Options” section for details. 17 VDDIO_3.3 P 3.3V digital VDD 18 RXDV / CRSDV / CONFIG2 Ipd/O MII Mode: Receive Data Valid Output / RMII Mode: Carrier Sense/Receive Data Valid Output / Config Mode: The pull-up/pull-down value is latched as CONFIG2 during power-up / reset. See “Strapping Options” section for details. 19 RXC O MII Mode: Receive Clock Output |
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