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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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LAN8740Ai-EN датащи(PDF) 11 Page - Microchip Technology |
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LAN8740Ai-EN датащи(HTML) 11 Page - Microchip Technology |
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11 / 136 page  2013-2015 Microchip Technology Inc. DS00001987A-page 11 LAN8740A/LAN8740Ai TABLE 2-2: LED PINS Num Pins Name Symbol Buffer Type Description 1 LED 1 LED1 O12 This pin can be used to indicate link activity, link speed, nINT, or nPME as configured via the LED1 Function Select field of the Wakeup Control and Status Register (WUCSR). Note: Refer to Section 3.8.1, "LEDs" and Sec- tion 3.8.4, "Wake on LAN (WoL)" for additional LED information. Interrupt Out- put nINT O12 Active low interrupt output. Note: By default, the nINT signal is output on the nINT/TXER/TXD4 pin. The nINT signal can be optionally configured to output on the LED1 or LED2 pins. Refer to Section 3.6, "Interrupt Management" for additional details on device inter- rupts. Power Man- agement Event Output nPME O12 Active low Power Management Event (PME) out- put. Note: The nPME signal can be optionally con- figured to output on the LED1, LED2, or RXD2/nPME/nINTSEL pins. Refer to Section 3.8.4, "Wake on LAN (WoL)" for additional nPME and WoL information. Regulator Off Configuration Strap REGOFF IS (PD) This configuration strap is used to disable the inter- nal 1.2 V regulator. When the regulator is disabled, external 1.2 V must be supplied to VDDCR. • When REGOFF is pulled high to VDD2A with an external resistor, the internal regulator is disabled. • When REGOFF is floating or pulled low, the internal regulator is enabled (default). See Note 1 for more information on configuration straps. Note: Refer to Section 3.7.4, "REGOFF: Inter- nal +1.2 V Regulator Configuration" for additional details. |
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