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ML2653CH Scheda tecnica(PDF) 4 Page - Micro Linear Corporation |
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ML2653CH Scheda tecnica(HTML) 4 Page - Micro Linear Corporation |
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4 / 23 page  4 ML2652/ML2653 NAME FUNCTION RxD Receive data output. Digital output which contains receive data sent to the controller. RxE Receive data valid. Digital output to the controller that indicates when the receive data (RxD) is valid. LPBK Local loopback. Digital input from the controller which forces the device to loopback transmit data without sending it on the media. FD Full Duplex Enable. When enabled the 10BASE-T MAU loopback and collision detect are disabled. LPBK must be disabled when using this function. CS0 Controller selection input. Digital input which selects one of four standard controller timing interfaces. This pin has an internal pulldown resistor to GND. CS1 Controller select input. Digital input which selects one of four standard controller timing interfaces. This pin has an internal pulldown resistor to GND. CS2 Controller select input. Digital input which selects one of four standard controller timing interfaces. This pin has an internal pulldown resistor to GND. RSL Receive squelch level select input. Pin has internal pullup resistor to VCC. RSL = High Receive squelch level = 10Base-T RSL = Low Receive squelch level = extended distance XMT Transmit status output. Digital output which indicates data transmission on Tx+ and Tx–. Pin is open drain output with resistor pullup and is capable of driving an LED. XMT pin and RCV pin are the same pin for the ML2653. RCV Receive status output. Digital output which indicates unsquelched data reception on Rx+ and Rx–. Pin is an open drain output with resistor pullup and is capable of driving an LED. NAME FUNCTION CLS Collision status output. Digital output which indicates that collision condition has been detected. Pin is an open drain output with resistor pullup and is capable of driving an LED. LTP Link test pass output/input. This pin consists of an open drain output transistor with a resistor pullup that serves both as a link test pass output and a link test disable input. When used as an output, this pin is capable of driving an LED. LTP = High, link test failed LTP = Low, link test pass LTP = GND, link test disabled AUI/TP AUI/twisted pair interface select input. AUI/TP = High, AUI selected AUI/TP = Low, TP selected RPOL This pin must be grounded at all times. JAB Jabber detect output. Digital output which indicates that the jabber condition has been detected. Pin is an open drain output with resister pullup and is capable of driving a LED. JAB = High, normal JAB = Low, jabber detected AUISEL AUI/TP port output status AUISEL = High, TP port selected AUISEL = Low, AUI port selected JABDIS Jabber disable input JABDIS = High, jabber disabled JABDIS = Low, normal operation NC No connect. Leave this pin open circuit. PIN DESCRIPTION (Continued) ABSOLUTE MAXIMUM RATINGS Absolute maximum ratings are limits beyond which the life of the integrated circuit may be impaired. All voltages unless otherwise specified are measured with respect to GND. (Note 1) VCC supply voltage .................................................. +6.5V All inputs and outputs ....................... –0.3V to VCC + 0.3V Input current per pin ............................................. ±25 mA Power dissipation .............................................. 0.75 Watt Storage temperature range ........................ –65°C to 150°C Junction Temperature .............................................. 150°C Lead temperature (soldering, 10 sec) ....................... 260°C Thermal Resistance ( qJA) 28-Lead PLCC ................................................... 60°C/W 44-Lead PLCC ................................................... 54°C/W 44-Lead TQFP ................................................... 67°C/W |
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