ML4642 Datasheet PDF | Micro Linear

Micro Linear ML4642

The ML4642 AUI Multiplexer contains all the necessary drivers/receivers and control logic to implement a 2 port MAU when used in conjuction with a transceiver chip which has a standard 802.3 AUI interface. In addition, the ML4642 is capable of operating in stand-alone mode where it interconnects two DTEs in the absence of a network MAU.

Part No.	ML4642
Datasheet	ML4642 Download
Manufacturer	Micro Linear
Description	AUI Multiplexer
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GENERAL DESCRIPTION

Several ML4642s can be cascaded together to implement a 4 or 8 port MAU or stand-alone device. Logic within the ML4642 detects collisions resulting from multiple DTEs transmitting simultaneously. In addition, collision signals received from a transceiver attached at the MAU port are propagated to both of the DTE ports. Jabbering DTEs are prevented from loading down the network by internal jabber timers which disable babbling ports. s

FEATURES

IEEE 802.3 compliant AUI interfaces assure compatibility with any AUI ready devices No crystal or clock input On-chip Jabber logic, Collision Detection, and SQE test with enable/disable option Selectable Loopback, Jabber, and SQE Test allows cascading of multiple chips to increase DTE port s s s BLOCK DIAGRAM +5V 61.9K RRSET VCC VCC CONTROL LOGIC TXIN1P TXIN1N RXOUT1P RXOUT1N CDOUT1P CDOUT1N TXIN2P TXIN2N RXOUT2P RXOUT2N CDOUT2P CDOUT2N LED DRIVERS MAU AUI INTERFACE CI MUX MAU AUI INTERFACE JABBER DO MUX DTE AUI INTERFACE TXOUT...