Clock processing circuit in chip debugging mode and clock processing method thereof

Abstract

The invention provides a clock processing circuit in a chip debugging mode and a clock processing method thereof. The clock processing circuit comprises a first selector, a second selector, a latch and a logic AND gate, the first selector is connected with the second selector, the second selector is connected with the latch, and the latch is connected with the logic AND gate. In a chip debugging mode, a chip carries out special processing on the system clock, a system clock signal can be turned over normally, moreover, after the chip enters the dormant state, the system clock does not stop dueto system dormancy, the chip and a computer can normally send and receive the signal for confirming the connection state, the chip can still work normally without exiting the debugging mode, the problem that the chip running program is interrupted in the debugging process is solved, the chip running program development process is optimized, and the development efficiency of the chip running program is improved.

Description

Technical field [0001] The present invention relates to the technical field of integrated circuit digital design, and in particular to a clock processing circuit in a chip debugging mode and a clock processing method thereof. Background technique [0002] During the development of the chip operating program, developers need to continuously debug the chip operating program. At this time, the chip operating mode needs to be switched to the debugging mode, and the chip operating program may contain commands to make the chip system sleep. When the chip enters the sleep state, stopping the system clock will cause the chip to exit the debugging mode, and the program debugging process is interrupted, so that the program following the sleep command cannot be debugged. [0003] Such as figure 1 Shown is the working principle diagram of the existing chip debugging. In the chip debugging working principle diagram, Chip is the chip, which contains the clock processing circuit CLK Circuit; Uli...

AI Technical Summary

Problems solved by technology

When the system dormancy command appears in the running program of the chip, the chip enters the dormant state, and the chip exits the debugging mode because of this, which causes the interruption of the debugging process of the running program of the chip, which not only affects the development process of the running program of the chip, but also affects the chip Development efficiency of Chip running programs

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