ml4644 Microsemi Corporation, ml4644 Datasheet
ml4644
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ml4644 Summary of contents
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... MAU when used in conjuction with a transceiver chip which has a standard 802.3 AUI interface. Several ML4644s can be cascaded together to implement port MAU or standalone device. Logic within the ML4644 detects collisions resulting from multiple DTEs transmitting simultaneously. In addition, collision signals received from a transceiver attached at the MAU port are propagated to all of the DTE ports ...
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... Transmit signal pair for DTE port 3. 12 TxIN3N Input Transmit signal pair for DTE port ML4644 PIN # NAME TxOUTN 15 TxOUTP 16 Reserved 17 RRSET 18 NC ...
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... DTE port connection Input 10MHz Crystal input pin. This pin can also be used as a 10MHz clock input pin, or can connect another that is driven by a crystal or 10MHz clock Input 10 MHz Crystal input pin connection. ML4644 3 ...
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... ML4644 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 ground. Power Supply Voltage Range GND –0.3 to +6.0V CC Input Current RRSET, All LED Driver Pins . . . . . . . 60mA Junction Temperature . . . . . . . . . . . . . . . . . . . . . . 150° ...
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... REC, COLL, Tx1, Tx2, Tx3, Tx4 On Time t LEDT MIN TYP. 100 15 180 200 250 100 15 180 200 250 XTAL Controlled 8.5 10 XTAL Controlled 40 50 XTAL Controlled 5 0.6 1.1 0.5 1.0 7 13.5 100 0.3 1.0 ML4644 MAX UNITS 200 200 200 ns 500 ns 11.5 MHz 60 % MHz 1.6 µs 1.5 µ 3 ...
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... ML4644 TIMING DIAGRAMS TxINP TxINN TxOUTP TxOUTN RxOUTP RxOUTN RxINP RxINN RxOUT1 RxOUT1 TxIN2P TxIN2N TxIN1P TxIN1N CDOUT1 CDOUT1 TxOUTP TxIN2 TxOUTN 6 VALID DATA t t TxODY TxSDY VALID DATA t TxLP Figure 3. Transmit Timing t VALID DATA t t RXODY ...
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... TxOUTP JAM TxOUTN TxIN1P TxIN1N CDOUT1P CDOUT1N CDOUT2P CDOUT2N TxIN1P TxIN1N TxOUT1P TxOUT1N CDOUT1P CDOUT1N DATA t t JAM XIN2P XIN2P Figure 6. Collision Timing VALID DATA t SQETDY Figure 7. SQE Timing VALID DATA t JAD VALID DATA t JSQE Figure 8. Jabber Timing ML4644 t SQETD CS0 7 ...
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... ML4644 TxOUT1P TxOUT1N TxLED1 8 t LETD Figure 9. LED Timing ...
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... SQE function of the ML4642 should be disabled to prevent false collision signalling. The SQE function in this configuration is performed by each DTE port of the ML4644 independently. Only one crystal is required, since X3 of the ML4644 with the crystal can drive X1 of the other chip. ML4644 ML4642 ML4644 Figure 2 ...
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... TxIN1N V CC RxOUT1P RTSET RxOUT1N TxOUTP CDOUT1P TxOUTN CDOUT1N RxINP TxIN2P RxINN TxIN2N RxOUT2P CDINP RxOUT2N CDINN CDOUT2P SQEN1 CDOUT2N SQEN2 ML4644 TxIN3P SQEN3 TxIN3N SQEN4 RESERVED X1 RxOUT3P X2 RxOUT3N X3 CDOUT3P JAB1 CDOUT3N JAB2 JAB3 TxIN4P TxIN4N JAB4 Tx1 Tx2 RxOUT4P Tx3 ...
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... ORDERING INFORMATION PART NUMBER ML4644CQ (EOL) © Micro Linear 1997 is a registered trademark of Micro Linear Corporation Products described in this document may be covered by one or more of the following patents, U.S.: 4,897,611; 4,964,026; 5,027,116; 5,281,862; 5,283,483; 5,418,502; 5,508,570; 5,510,727; 5,523,940; 5,546,017; 5,559,470; 5,565,761; 5,592,128; 5,594,376; Japan: 2598946; 2619299. Other patents are pending. ...