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KSZ9021RNI Datasheet(PDF) 10 Page - Micrel Semiconductor |
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KSZ9021RNI Datasheet(HTML) 10 Page - Micrel Semiconductor |
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10 / 56 page  Micrel, Inc. KSZ9021RL/RN October 2009 10 M9999-101309-1.1 Pin Number Pin Name Type (1) Pin Function 12 AVDDL P 1.2V analog VDD 13 AVDDL P 1.2V analog VDD 14 TXRXP_D I/O Media Dependent Interface[3], positive signal of differential pair 1000Base-T Mode: TXRXP_D corresponds to BI_DD+ for MDI configuration and BI_DC+ for MDI-X configuration, respectively. 10Base-T / 100Base-TX Mode: TXRXP_D is not used. 15 TXRXM_D I/O Media Dependent Interface[3], negative signal of differential pair 1000Base-T Mode: TXRXM_D corresponds to BI_DD- for MDI configuration and BI_DC- for MDI-X configuration, respectively. 10Base-T / 100Base-TX Mode: TXRXM_D is not used. 16 AVDDH P 3.3V analog VDD 17 VSS Gnd Digital ground 18 VSS Gnd Digital ground 19 LED2 / PHYAD1 I/O LED Output: Programmable LED2 Output / Config Mode: The pull-up/pull-down value is latched as PHYAD[1] during power-up / reset. See “Strapping Options” section for details. The LED2 pin is programmed by the LED_MODE strapping option (pin 55), and is defined as follows. Single LED Mode Link Pin State LED Definition Link off H OFF Link on (any speed) L ON Tri-color Dual LED Mode Pin State LED Definition Link / Activity LED2 LED1 LED2 LED1 Link off H H OFF OFF 1000 Link / No Activity L H ON OFF 1000 Link / Activity (RX, TX) Toggle H Blinking OFF 100 Link / No Activity H L OFF ON 100 Link / Activity (RX, TX) H Toggle OFF Blinking 10 Link / No Activity L L ON ON 10 Link / Activity (RX, TX) Toggle Toggle Blinking Blinking For Tri-color Dual LED Mode, LED2 works in conjunction with LED1 (pin 21) to indicate 10 Mbps Link and Activity. 20 DVDDH P 3.3V / 2.5V digital VDD |
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