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DM9081FP Datasheet(PDF) 1 Page - Davicom Semiconductor, Inc.

No. de pieza DM9081FP
Descripción Electrónicos  10BASE-T Hub Controller
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Fabricante Electrónico  DAVICOM [Davicom Semiconductor, Inc.]
Página de inicio  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9081FP Datasheet(HTML) 1 Page - Davicom Semiconductor, Inc.

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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


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