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DM9081 Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part # DM9081
Description  10BASE-T Hub Controller
PDF  22 Pages
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Manufacturer  ETC [List of Unclassifed Manufacturers]
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DM9081 Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers

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DM9081
Final
3
Version: DM9081-DS-F01
April 22, 1997
Features
T Repeater functions comply with IEEE 802.3 Repeater
Unit specification
T Eight Integral 10BASE-T transceivers utilize the
required pre-distortion transmission technique
T Two Attachment Unit Interface (AUI) ports allow
connection with 10BASE5 (Ethernet) and 10BASE2
(Cheapernet) networks
T Design a Dumb Hub in minimum mode by using
minimum external logic that can respond to Link,
Carrier Sense and Collision Status from LED
T Supports one LED output per port for additional status
indicators such as Link, Partition, Carrier Sense, etc.
T Built-in Jabber LED reports global Jabber information
of the DM9081 Hub
T Built-in Traffic LED indicates Hub global 10MHz
bandwidth utilization status
T Expandable to accommodate two DM9081 connections,
with no external logic required
T On board PLL, Manchester encoder/decoder and FIFO
T Expandable to accommodate increased number of
repeater ports. Recommended IC cascade number: under
3 and inclusive
T Preamble loss effects eliminated by deep FIFO
T Each port can be isolated (partitioned) and reconnected
separately
T Twisted Pair Link Test capability
T Full amplitude and timing regeneration for
retransmitted signals
T Low power CMOS process with single 5V supply
T 100-pin QFP package
Pin Configuration
DTPO3-
TPO3-
DV DD
DV DD
LI/RX7
LI/RX6
LI/RX5
LI/RX4
DV DD
LI/RX3
LI/RX1
LI/RX0
LI/RX2
AUI1_CRS_LED
X1
COL_LED
RESET#
TESTPIN1
TESTPIN0
DGND
EXPIN#
DAT
EXPOUT#
TCK
NC
X2
NC
DV DD
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+
AV DD
TXN1
TXP1
RXN1
LED_LATCH
AUI_LED
TP_BIT_LED
TP_POL_LED
TP_JAB_LED
TRAFFIC_LED
TP_PAR_LED
TP_LINK_LED



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