| 摘要 |
PURPOSE:To perform the debug with high efficiency by reading the internal data when a debug error of the firmware of a digital signal processing circuit is detected. CONSTITUTION:A digital signal processing circuit contains an instruction means 1, an internal memory means 2, an arithmetic means 3, an input/output control means 4 which controls these means 1-3, and an external memory means 5. If the means 4 receives an internal data output signal from outside when a debug error occurs, the means 4 resets an output address generating means 6 to inhibit the input/output with outside. Thus the internal data on the means 2 is outputted to the means 5 via an address designated by the means 6. Thus it is possible to refer to the debug result. |
