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DM9103 Datasheet(PDF) 15 Page - Davicom Semiconductor, Inc.

Part # DM9103
Description  10/100 Mbps 3-port Ethernet Switch Controller with PCI Interface
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Manufacturer  DAVICOM [Davicom Semiconductor, Inc.]
Direct Link  http://www.davicom.com.tw
Logo DAVICOM - Davicom Semiconductor, Inc.

DM9103 Datasheet(HTML) 15 Page - Davicom Semiconductor, Inc.

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DM9103
3-port switch with PCI Interface
Preliminary datasheet
15
DM9103-DS-P02
September 26, 2007
These two pins are the Twisted Pair receive in MDI
mode or transmit in MDIX mode.
95
BGRES
I/O
Bandgap Pin
Connect a 1.4K resistor to BGGND in application.
96
BGGND
P
Bandgap Ground
97
VCNTL
I/O
1.8V Voltage control
98
VREF
O
Voltage Reference
Connect a 0.1u capacitor to ground in application.
5.7 Miscellaneous Pins
Pin No.
Pin Name
I/O
Description
53
PWRST#
I
Power on Reset
Low active with minimum 1ms
76
TEST1
I,PD Tie to high in application
77
TEST2
I,PD 0: 3-port mode
All ports are active in this mode.
1: 2-port mode
Only 2 ports are active in this mode. Port 1 or port 2
can be disabled by strap TXEN2. In this mode, the
memory resource is shared by PCI bus port and the
other 2 ports.
78
TEST3
I,PD Tie to ground in application
5.8 Power Pins
Pin No.
Pin Name
I/O
Description
4,18,32,40,48,62,75,100
VCC3
P
Digital 3.3V
24,57,120
VCCI
P
Internal 1.8V core power
11,21,27,35,45,
54,69,103,125
GND
P
Digital GND
86,94,99
AVDD3
P
Analog 3.3V power
79,87
AVDDI
P
Analog 1.8V power
82,83,90,91
AGND
P
Analog GND


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