AMD 8151 specifications IO signal types

24888 Rev 3.03 - July 12, 2004 AMD-8151TMAGP Tunnel Data Sheet

2Ordering Information

AMD-8151 BL C

Case Temperature

C = Commercial temperature range

Package Type

BL = Organic Ball Grid Array with lid

Family/Core

AMD-8151

3Signal Descriptions

3.1Terminology

See section 5.1.2 for a description of the register naming convention used in this document. See the AMD-8151TMHyperTransportTM AGP3.0 Graphics Tunnel Design Guide for additional information.

Signals with a # suffix are active low.

Signals described in this chapter utilize the following IO cell types:

Name	Notes
Input	Input signal only.
Output	Output signal only. This includes outputs that are capable of being in the high-impedance state.
OD	Open drain output. These signals are driven low and expected to be pulled high by external cir-
	cuitry.
IO	Input or output signal.
IOD	Input or open-drain output.
Analog	Analog signal.
w/PU	With pullup. The signal includes a pullup resistor to the signal’s power plane. The resistor value is
	nominally 8K ohms.

Table 1: IO signal types.

The following provides definitions and reference data about each of the IC’s pins. “During Reset” provides the state of the pin while RESET# is asserted. “After Reset” provides the state of the pin immediately after RESET# is deasserted. “Func.” means that the pin is functional and operating per its defined function.

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