lan9312 Standard Microsystems Corp., lan9312 Datasheet - Page 18

• Manufacturer Part Number: lan9312
• Description: Lan9312 High Performance Two Port 10/100 Managed Ethernet Switch With 32-bit Non-pci Cpu Interface
• Manufacturer: Standard Microsystems Corp.

Revision 1.2 (04-08-08)
1.2
BUFFER TYPE
OCLK
OD12
ICLK
OD8
O12
AIO
PU
PD
AO
O8
IS
AI
P
Table 1.1
on page 26
Buffer Types
describes the pin buffer type notation used in
Schmitt-triggered Input
Output with 8mA sink and 8mA source
Open-drain output with 8mA sink
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:
50uA (typical) internal pull-down. Unless otherwise noted in the pin description, internal
pull-downs are always enabled.
Note:
Analog input
Analog output
Analog bi-directional
Crystal oscillator input pin
Crystal oscillator output pin
Power pin
and throughout this document.
Internal pull-up resistors prevent unconnected inputs from floating. Do not rely on
internal resistors to drive signals external to the LAN9312. When connected to a
load that must be pulled high, an external resistor must be added.
Internal pull-down resistors prevent unconnected inputs from floating. Do not rely
on internal resistors to drive signals external to the LAN9312. When connected to
a load that must be pulled low, an external resistor must be added.
High Performance Two Port 10/100 Managed Ethernet Switch with 32-Bit Non-PCI CPU Interface
Table 1.1 Buffer Types
DATASHEET
18
DESCRIPTION
Chapter 3, "Pin Description and Configuration,"
SMSC LAN9312
Datasheet