4.1 Buffer Type Descriptions
I
Input TTL Compatible.
IS
Input with Schmitt Trigger.
O6
Output, 6mA sink, 3mA source.
O8
Output, 8mA sink, 4mA source.
OD8
Open Drain Output, 8mA sink.
IO8
Input/Output, 8mA sink, 4mA source.
IS/O8
IO12
IOD12
O12
Input with Schmitt Trigger/Output, 8mA sink, 4mA source.
Input/Output, 12mA sink, 6mA source.
Input/Output (Open Drain), 12mA sink.
Output, 12mA sink, 6mA source.
OD12
OD14
OP14
IOP14
IS/OP14
IOD16
IXTL
Open Drain Output, 12mA sink.
Open Drain Output, 14mA sink.
Output, 14mA sink, 14mA source.
Input/Output, 14mA sink, 14mA source. Backdrive protected.
Input with Schmitt Trigger/Output, 14mA sink, 14mA source.
Input/Output (Open Drain), 16mA sink.
32.768 kHz crystal input
OXTL
PCI_IO
PCI_O
PCI_I
PCI_ICLK
32.768 kHz crystal output
Input/Output. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1)
Output. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1)
Input. These pins meet the PCI 3.3V AC and DC Characteristics. (Note 1)
Clock Input. These pins meet the PCI 3.3V AC and DC Characteristics and timing. (Note 2)
Note 1: See the PCI Local Bus Specification, Revision 2.1, Section 4.2.2.
Note 2: See the PCI Local Bus Specification, Revision 2.1, Section 4.2.2. and 4.2.3.
SMSC DS – LPC47S45x
Page 17 of 259
Rev. 07/09/2001
DATASHEET
SMSC [ SMSC CORPORATION ]
