w89c940 Winbond Electronics Corp America, w89c940 Datasheet - Page 8

• Manufacturer Part Number: w89c940
• Description: Elanc-pci Twisted-pair Ether-lan Controller With Pci Interface
• Manufacturer: Winbond Electronics Corp America

Note: Signal Type Definition
AGND
in
out
t/s
s/t/s
o/d
Input is a standard input-only signal
Totem Pole output is a standard active driver.
Tri-State is a bi-directional, tri-state input/output pin.
Sustained Tri-State is an active low tri-state signal owned and driven by one and only one agent
at a time. The agent that drives an s/t/s pin low must drive it high for at least one clock before
letting it float. A new agent cannot start driving a s/t/s signal any sooner than one clock after the
previous owner tri-states it. A pull-up is required to sustain the inactive state until another agent
drives it, and must be provided by the central resource.
Open Drain allows multiple devices to share as a wire-OR.
80
I
Analog Ground:
Ground pin for internal analog circuitry.
It is recommended that there is a decoupling capacitor connected between the
power supply pins and ground pins. A RC low pass filter is also recommended to
be used for analog power supply.
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W89C940