Motorola CPU32 User's Guide download pdf (Page 62)

Modes of Operation

The HP E2480A Preprocessor Interface can be used in State mode or

Timing mode. The following sections describe these operating modes.

State mode

In State mode, the logic analyzer uses clock store qualification to capture

address, data, and status information once during an instruction or data

cycle. This mode is set up by the State configuration files. The State

configuration files also automatically load the inverse assembler.

Timing mode

In Timing mode, the logic analyzer samples the microcontroller pins

asynchronously, at a user-selected sampling rate. The Timing mode is set up

by the Timing configuration files.

State and Timing modes use different connectors on the preprocessor

interface. The Timing pins are direct connections to the microcontroller signals.

The State pins have active circuitry on the preprocessor interface. State

information is acquired three target system clock cycles after the same

information is captured in Timing mode.

E2480A Motorola CPU32 Preprocessor Interface 3–3

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Motorola CPU32 User's Guide Page 62