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DM9081F Datasheet(PDF) 1 Page - Davicom Semiconductor, Inc. |
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DM9081F Datasheet(HTML) 1 Page - Davicom Semiconductor, Inc. |
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1 / 22 page  DM9081 10BASE-T Hub Controller Final 1 Version: DM9081-DS-F02 February 02, 2001 General Description The 10BASE-T Hub Controller (DM9081) provides a system level solution for designing IEEE-compliant 802.3 repeaters that incorporate 10BASE-T transceivers. This device integrates the repeater functions specified by section 9 of the IEEE 802.3 standard. The Twisted Pair transceiver is compliant with 10BASE-T standards. The DM9081 provides eight integral Twisted Pair Media Attachment Units (MAUs) and two Attachment Unit Interface (AUI) ports in a 100-pin QFP package. The total number of ports per repeater unit can be increased by connecting multiple DM9081 chips via their expansion ports. The DM9081 supports LED drivers to monitor port status. It displays Link, Carrier Sense, Collision, Partition, and Bit Rate Error Status. In minimum mode, Link, Carrier Sense, and Collision Status can be displayed without external TTL devices. Block Diagram TX MUX PREAMBLE JAM SIGNAL FIFO MANCHESTER DECODER RX MUX AUI PORT1 AUI PORT2 TP PORT0 TP PORT7 PLL MANCHESTER ENCODER * * * * * DATA IN DATA OUT MUX STATE MACHINE TIMER LED PORT2 LED PORT1 EXPANSION PORT NRZ DATA EXPIN# EXPOUT# DAT RXP1 RXN1 CDP1 CDN1 TXP1 TXN1 RXP2 RXN2 CDP2 CDN2 TXP2 TXN2 RXD0+ RXD0- TPO0+ DTPO0+ DTPO0- TPO0- RXD7+ RXD7- TPO7+ DTPO7+ DTPO7- TPO7- RX_CLK |
Similar Part No. - DM9081F |
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Similar Description - DM9081F |
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