DM9081FP DAVICOM [Davicom Semiconductor, Inc.], DM9081FP Datasheet - Page 3

• Manufacturer Part Number: DM9081FP
• Description: 10BASE-T Hub Controller
• Manufacturer: DAVICOM [Davicom Semiconductor, Inc.]

Features
Pin Configuration
Final
Version: DM9081-DS-F02
February 02, 2001
Repeater functions comply with IEEE 802.3
Repeater Unit specification
Eight Integral 10BASE-T transceivers utilize the
Two Attachment Unit Interface (AUI) ports allow
10BASE2
Design a Dumb Hub in minimum mode by using
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
required pre-distortion transmission technique
connection with 10BASE5 (Ethernet) and
(Cheapernet) networks
minimum external logic that can respond to Link,
Carrier Sense and Collision Status from LED
AUI1_CRS_LED
AUI2_CRS_LED
TESTPIN1
TESTPIN0
EXPOUT#
COL_LED
RESET#
DTPO3-
EXPIN#
LI/RX7
LI/RX6
LI/RX5
LI/RX4
LI/RX3
LI/RX2
LI/RX1
LI/RX0
TPO3-
DGND
DGND
DV
DV
DV
DV
DAT
TCK
NC
NC
X2
X1
DD
DD
DD
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
27
28
29
30
LED_LATCH
AUI_LED
TP_BIT_LED
TP_POL_LED
TP_JAB_LED
TRAFFIC_LED
TP_PAR_LED
TP_LINK_LED
DM9081F
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
78
77
73
64
59
57
52
51
80
79
76
75
74
72
71
70
69
68
67
66
65
63
62
61
60
58
56
55
54
53
10BASE-T Hub Controller
CDP2
CDN2
RXP2
RXN2
TXP2
TXN2
CDP1
CDN1
RXP1
RXN1
TXP1
TXN1
AGND
AV
RXD0+
RXD0-
RXD1+
RXD1-
RXD2+
RXD2-
RXD3+
RXD3-
RXD4+
RXD4-
RXD5+
RXD5-
RXD6+
RXD6-
RXD7+
RXD7-
DD
DM9081
3