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AM79C875KC Datasheet(PDF) 12 Page - Advanced Micro Devices

No. de pieza AM79C875KC
Descripción Electrónicos  NetPHY??4LP Low Power Quad 10/100-TX/FX Ethernet Transceiver
PDF  48 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C875KC Datasheet(HTML) 12 Page - Advanced Micro Devices

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Am79C875
10BASE-T operation. When ANEGA is high,
FORCE100 has no effect on operation.
LEDDPX[3]/SCRAM_EN
Port [3] Duplex LED
Input/Output, Pull-Up
LED low indicates full-duplex and high indicates half-
duplex.
SCRAM_EN. Scrambler Enable. Pulled low at reset
will bypass the scrambler. Default is scrambler
enabled. This signal should have a 1k–4.7K
Ω pull-up
resistor.
LEDACT_LINK[3]/ANEGA
Port [3] Transmit/Receive Activity LED
Input/Output, Pull-Up
LED is low for approximately 30 ms each time there is
activity. LINK is an active low signal.
ANEGA: Auto-Negotiation Ability. Asserted high
means Auto-Negotiation enable while low means man-
ual selection through DPLX, FORCE100. This pin also
is reflected as ANEGA bit, MII Status Register 1, bit 3.
LEDSPD[3]/BURN_IN
Port [3] Speed LED
Input/Output, Pull-Up
LED is low when operating in 100BASE-X modes and
high when operating in 10BASE-T modes.
BURN_IN: Burn-In mode. Burn-in mode for reliability
assurance control. This signal should have a 1k–4.7K
Ω
pull-up resistor.
Bias
IBREF
Reference Bias Resistor
Analog
To be tied to an external 10-K
Ω (1%) resistor which
should be connected to the analog ground at the
other end.
Power and Ground
OVDD
Power
Digital
These pins are the digital +3.3 V power supply for I/O.
OGND
Ground
Digital
These pins are the digital ground for I/O.
CVDD
Power
Digital
These pins are the digital +3.3 V power supply for the
Core logic.
CGND
Ground
Digital
These pins are the digital ground for Core logic.
AVDD
Power
Analog
These pins are the +3.3V power supply for analog
circuit.
AGND
Ground
Analog
These pins are the ground for analog circuit.
GAVDD
Power
Analog
These pins are the +3.3 V power supply for common
analog circuits.
GAGND
Ground
Analog
This pin is the ground for common analog circuits.



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