Intel 41210 manual Signal Description, On-Die Termination ODT

	Signal Description
Signal Description	2

The “#” symbol at the end of a signal name indicates that the active (asserted) state occurs when the signal is at a low voltage level. When “#” is not present after the signal name, the signal is asserted when at the high voltage level. The following notations are used to describe the signal type:

I:Input pin

O:Output pin

OD:	Open-drain Output pin
I/O:	Bidirectional Input/Output pin
I/OD:	Bidirectional Input/Open-drain Output pin

2.1On-Die Termination (ODT)

The Intel® 41210 Serial to Parallel PCI Bridge (also called the 41210 Bridge or the 41210) incorporates On-Die Termination (ODT) for most of the PCI interface signals. ODT eliminates the need for the system designer to incorporate external pull-up resistors in the design.

Table 1, “ODT Signals” on page 14 lists the signals that have an on-die termination of 8.33 KΩ @ 40%.

Intel® 41210 Serial to Parallel PCI Bridge Developer’s Manual 13