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DM9081 Scheda tecnica(PDF) 3 Page - Davicom Semiconductor, Inc. |
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DM9081 Scheda tecnica(HTML) 3 Page - Davicom Semiconductor, Inc. |
3 / 22 page DM9081 10BASE-T Hub Controller Final 3 Version: DM9081-DS-F02 February 02, 2001 Features Repeater functions comply with IEEE 802.3 Repeater Unit specification Eight Integral 10BASE-T transceivers utilize the required pre-distortion transmission technique Two Attachment Unit Interface (AUI) ports allow connection with 10BASE5 (Ethernet) and 10BASE2 (Cheapernet) networks Design a Dumb Hub in minimum mode by using minimum external logic that can respond to Link, Carrier Sense and Collision Status from LED Supports one LED output per port for additional status indicators such as Link, Partition, Carrier Sense, etc. Built-in Jabber LED reports global Jabber information of the DM9081 Hub Built-in Traffic LED indicates Hub global 10MHz bandwidth utilization status Expandable to accommodate two DM9081 connections, with no external logic required On board PLL, Manchester encoder/decoder and FIFO Expandable to accommodate increased number of repeater ports. Recommended IC cascade number: under 3 and inclusive Preamble loss effects eliminated by deep FIFO Each port can be isolated (partitioned) and reconnected separately Twisted Pair Link Test capability Full amplitude and timing regeneration for retransmitted signals Low power CMOS process with single 5V supply 100-pin QFP package Pin Configuration DTPO3- TPO3- DVDD DVDD LI/RX7 LI/RX6 LI/RX5 LI/RX4 DVDD LI/RX3 LI/RX1 LI/RX0 LI/RX2 AUI2_CRS_LED X1 COL_LED RESET# TESTPIN1 TESTPIN0 DGND EXPIN# DAT EXPOUT# TCK NC X2 NC DVDD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 27 29 80 79 78 77 76 75 74 72 73 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 CDP2 CDN2 RXP2 RXN2 TXP2 TXN2 CDP1 CDN1 RXP1 AGND RXD0- RXD1+ RXD2- RXD3+ RXD3- RXD4+ RXD4- RXD5+ RXD5- RXD6+ RXD6- RXD7+ RXD7- DM9081F DGND AUI1_CRS_LED RXD2+ RXD1- RXD0+ AVDD TXN1 TXP1 RXN1 LED_LATCH AUI_LED TP_BIT_LED TP_POL_LED TP_JAB_LED TRAFFIC_LED TP_PAR_LED TP_LINK_LED |
Codice articolo simile - DM9081 |
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Descrizione simile - DM9081 |
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