LAN9420 Datasheet, PDF (22/171 Pages) SMSC Corporation – Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface

2.2 Buffer Types
Single-Chip Ethernet Controller with HP Auto-MDIX Support and PCI Interface
Datasheet
BUFFER TYPE
IS
O8
O12
OD12
IPCI
OPCI
PU
PD
AI
AIO
ICLK
OCLK
P
DESCRIPTION
Schmitt-triggered Input
Output with 8mA sink and 8mA source current
Output with 12mA sink and 12mA source current
Open-drain output with 12mA sink current
PCI compliant Input
PCI compliant Output
50uA (typical) internal pull-up. Unless otherwise noted in the pin description, internal pull-ups
are always enabled.
Note:
Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on
internal resistors to drive signals external to LAN9420/LAN9420i. When connected
to a load that must be pulled high, an external resistor must be added.
50uA (typical) internal pull-down. Unless otherwise noted in the pin description, internal pull-
downs are always enabled.
Note:
Internal pull-down resistors prevent unconnected inputs from floating. Do not rely
on internal resistors to drive signals external to LAN9420/LAN9420i. When
connected to a load that must be pulled low, an external resistor must be added.
Analog Input
Analog bi-directional
Crystal oscillator input
Crystal oscillator output
Power and Ground pin
Revision 1.6 (07-18-11)
22
DATASHEET
SMSC LAN9420/LAN9420i