AMD-766 Datasheet, PDF (7/96 Pages) Advanced Micro Devices – Peripheral Bus Controller

23167B – March 2001
Preliminary Information
AMD-766^TM Peripheral Bus Controller Data Sheet
3 Signal Descriptions
3.1 Terminology
See section 5.1.2 for a description of the register naming conventions used in this document. See section 4.6.1.5 for a
description of the system power states: MOFF, SOFF, STD, STR, POS, C3, C2, and FON. See section 3.9 for a
description of the power planes. See section 4.1.1 for a description of the types of resets.
Signals with a # suffix are active low.
Note: All inputs are 5-volt tolerant except analog pins and as noted in the pin descriptions.
Signals described in this chapter utilize the following IO cell types:
Name Notes
Input
Output
OD
IO
IOD
Input signal only.
Output signal only. This includes outputs that are capable of being in the high-impedance state.
Open drain output. These pins are driven low and designed to be pulled high by external circuitry.
Input or output signal.
Input or open-drain output.
w/H
-PU
-PD
Analog
With hysteresis on the input (applied with other signal types).
Pull up included (applied with other signal types). An internal pull-up resister is provided to the line.
These pull-ups are enabled by C3A48. The resistors vary over process, voltage and temperature from
3400 to 7150 ohms.
Pull down included (applied with other signal types). An internal pull-down resister is provided to the
line. These pull-downs are enabled by C3A48. The resistors vary over process, voltage and temperature
from 3400 to 7150 ohms.
Analog signal.
The following provides definitions and reference data about each of the IC’s pins. “During Reset” provides the state
of the pin while the pin’s power plane is being reset (while RESET# is low for the main power plane; while the
internal RST_SOFT signal is asserted for the VDD_AUX power plane). “After Reset” provides the state of the pin
immediately after that reset. “During POS” provides the state of the pin while in the power on suspend system sleep
states. “During S3:S5” provides the state of the pin while in the suspend to disk, suspend to RAM, or soft off system
sleep states. “Func” means that the signal is active or functional, operating per its defined function. “Last State”
indicates that the signal remains in the state that it was in when the system entered POS.
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