AM79C875KI AMD (ADVANCED MICRO DEVICES), AM79C875KI Datasheet - Page 12

• Manufacturer Part Number: AM79C875KI
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AM79C875KI

• Lead Free Status / RoHS Status: Not Compliant

1 0 B A S E - T o p e r a t i o n . W h e n A N E G A i s h i g h ,
FORCE100 has no effect on operation.
LEDDPX[3]/SCRAM_EN
Port [3] Duplex LED
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–4.7KΩ pull-up
resistor.
LEDACT_LINK[3]/ANEGA
Port [3] Transmit/Receive Activity LED
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
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–4.7KΩ
pull-up resistor.
Bias
IBREF
Reference Bias Resistor
To be tied to an external 10-KΩ (1%) resistor which
should be connected to the analog ground at the
other end.
12
Input/Output, Pull-Up
Input/Output, Pull-Up
Input/Output, Pull-Up
Analog
Am79C875
Power and Ground
OVDD
Power
These pins are the digital +3.3 V power supply for I/O.
OGND
Ground
These pins are the digital ground for I/O.
CVDD
Power
These pins are the digital +3.3 V power supply for the
Core logic.
CGND
Ground
These pins are the digital ground for Core logic.
AVDD
Power
These pins are the +3.3V power supply for analog
circuit.
AGND
Ground
These pins are the ground for analog circuit.
GAVDD
Power
These pins are the +3.3 V power supply for common
analog circuits.
GAGND
Ground
This pin is the ground for common analog circuits.
Analog
Analog
Analog
Analog
Digital
Digital
Digital
Digital