DM9081FP DAVICOM [Davicom Semiconductor, Inc.], DM9081FP Datasheet - Page 4

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

Pin Description
4
Transceiver
Expansion Port
Pin No.
100, 1
34, 31
33, 32
39, 36
38, 37
44, 41
43, 42
49, 46
48, 47
84, 87
85, 86
89, 92
90, 91
94, 97
95, 96
52, 51
54, 53
56, 55
58, 57
60, 59
62, 61
64, 63
66, 65
70, 69
76, 75
72, 71
78, 77
74, 73
80, 79
99, 2
24
22
23
CDP1, CDN1
CDP2, CDN2
RXP1, RXN1
RXP2, RXN2
TXP1, TXN1
TXP2, TXN2
EXPOUT#
Pin Name
DTPO3+/-
DTPO4+/-
DTPO5+/-
DTPO6+/-
DTPO7+/-
DTPO0+/-
DTPO1+/-
DTPO2+/-
RXD7+/-
RXD6+/-
RXD5+/-
RXD4+/-
RXD3+/-
RXD2+/-
RXD1+/-
RXD0+/-
TPO3+/-
TPO4+/-
TPO5+/-
TPO6+/-
TPO7+/-
TPO0+/-
TPO1+/-
TPO2+/-
EXPIN#
DAT
I/O,Z
I/O
O
O
O
I
I
I
I
TP Driver Outputs. The TPO+/- output generate 10Mbits/s
Manchester-encoded data. The DTPO+/- outputs are one-half bit
time delayed and inverted with respect to TPO+/-. These four
outputs provide the TP drivers with pre-distortion capability
10BASE-T Port Different Data Receivers
AUI Port Different Data Drivers. The outputs are source followers
that require a 270Ω pull-down resistor
AUI Port Differential Receive Input Pair
AUI Port Different Collision Input Pair
The assertion of this signal indicates that DM9081 is transmitting
data on DAT pins. It is active low
The assertion of this signal indicates that DM9081 is receiving data
on DAT pins. The receiving data will be broadcast to the other
ports. It is active low and is internally pulled high with a 100KΩ
resistor
The DAT pins of all DM9081 chips are inter-connected. The active
DM9081 drives DAT with repeated data or jam signals in NRZ
format. The inactive DM9081 receives the repeated data or jam
signals from the DAT pin
Description
10BASE-T Hub Controller
Version: DM9081-DS-F02
DM9081
February 02, 2001
Final