DM9081F View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
DM9081F Datasheet PDF : 22 Pages
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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
Pin Configuration
DM9081
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
DTPO3-
TPO3-
DVDD
DV DD
LI/RX7
LI/RX6
LI/RX5
LI/RX4
DV DD
LI/RX3
LI/RX2
LI/RX1
LI/RX0
DGND
AUI1_CRS_LED
AUI1_CRS_LED
COL_LED
RESET#
TESTPIN1
TESTPIN0
DGND
EXPIN#
DAT
EXPOUT#
TCK
NC
X2
X1
NC
DV DD
1
2
3
4
5 LED_LATCH
6 AUI_LED
7 TP_BIT_LED
8 TP_POL_LED
9
10 TP_JAB_LED
11 TRAFFIC_LED
12 TP_PAR_LED
13 TP_LINK_LED
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
DM9081F
80
CDP2
79
CDN2
78
RXP2
77
RXN2
76
TXP2
75
TXN2
74
CDP1
73
CDN1
72
RXP1
71
RXN1
70
TXP1
69
TXN1
68
AGND
67
AV DD
66
RXD0+
65
RXD0-
64
RXD1+
63
RXD1-
62
RXD2+
61
RXD2-
60
RXD3+
59
RXD3-
58
RXD4+
57
RXD4-
56
RXD5+
55
RXD5-
54
RXD6+
53
RXD6-
52
RXD7+
51
RXD7-
Final
3
Version: DM9081-DS-F01
April 22, 1997
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