| 摘要 |
An integrated circuit for particular use in a disc drive has a core logic module connected to a core voltage, an input/output buffer module connected to an input/output voltage and having input/output buffer control lines connected to the core logic module, and a mode switch input on the I/O buffer module that is operable to prevent output operation of the I/O buffer module whenever core voltage is below a safe operating level. One embodiment has the core logic module determining when the safe operating level is met and providing an appropriate signal to the I/O buffer. Another embodiment has a separate level detect module operably connected to the core voltage and the input/output voltage determining when the safe operating level is met, and having an output connected to the mode switch input on the I/O buffer module. |
