USB 2.0 Hub and 10/100 Ethernet Controller
Datasheet
2.2
Buffer Types
Table 2.8 Buffer Types
DESCRIPTION
BUFFER TYPE
IS
IS_5V
O8
Schmitt-triggered Input
5V Tolerant Schmitt-triggered Input
Output with 8mA sink and 8mA source
Open-drain output with 8mA sink
OD8
O12
OD12
PU
Output with 12mA sink and 12mA source
Open-drain output with 12mA sink
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 LAN9514/LAN9514i. When
connected to a load that must be pulled high, an external resistor must be added.
PD
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 LAN9514/LAN9514i. When
connected to a load that must be pulled low, an external resistor must be added.
AI
AIO
ICLK
OCLK
P
Analog input
Analog bi-directional
Crystal oscillator input pin
Crystal oscillator output pin
Power pin
SMSC LAN9514/LAN9514i
Revision 1.0 (11-24-09)
DATA1S9HEET
SMSC [ SMSC CORPORATION ]
