On-chip debug emulator, debugging method, and microcomputer

Details On-chip debug emulator, debugging method, and microcomputer On-chip debug emulator, debugging method, and microcomputer

2011-07-12

2011-07-12

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S030000, C714S031000, C703S028000

Reexamination Certificate

active

07979745

ABSTRACT:
An on-chip debug emulator is capable of connecting to the target device and the host device for remotely debugging the program in the target device. The on-chip debug emulator contains a debug communication control unit. This debug communication control unit contains a plurality of serial communication circuits, the plurality of serial communication circuits are commonly provided with a clock signal. The debug communication control unit controls communications with the target device based on commands output from the host device. Each of The plurality of serial communication circuits contains a data buffer and serially transmits data stored in the data buffer to and from the target device while synchronized with the clock signal. Namely, the plurality of serial communication circuits communicate in parallel while operating synchronized with the same clock. The on-chip debug emulator can in this way be made utilizing a low-cost microcomputer not containing any parallel communication circuits.

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