
Chapter 5
Signal Descriptions
93
23542A/0—September 2000
AMD-K6-2E+ Embedded Processor Data Sheet
Preliminary Information
5
Signal Descriptions
This chapter includes a detailed description of each signal
supported on the AMD-K6-2E+ processor. This chapter also
provides tables listing the signals grouped by type, beginning
on page 140.
The logic symbol diagram on page 91 shows the signals grouped
by function.
Connection diagrams and pins listed by high-level function are
included in
Chapter 18, “Pin Designations” on page 321.
5.1
Signal Terminology
The following terminology is used in this chapter:
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Driven
—The processor actively pulls the signal up to the
High-voltage state or pulls the signal down to the
Low-voltage state.
Floated
—The signal is not being driven by the processor
(high-impedance state), which allows another device to
drive this signal.
Asserted
—For all active High signals, the term
asserted
means the signal is in the High-voltage state. For all active
Low signals, the term
asserted
means the signal is in the
Low-voltage state. See Table 19 on page 140 for information
on asserting signals synchronously and asynchronously.
Negated
—For all active High signals, the term
negated
means
the signal is in the Low-voltage state. For all active Low
signals, the term
negated
means the signal is in the
High-voltage state.
Sampled
—The processor has measured the state of a signal
at predefined points in time and will take the appropriate
action based on the state of the signal. If a signal is not
sampled by the processor, its assertion or negation has no
effect on the operation of the processor.
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