Bus slave device and interrupt request determination method thereof

An interrupt request determination method of a bus slave device, the interrupt request determination method is used to determine an interrupt request of a plurality of slave devices in a system management bus device, the interrupt request determination method comprising:

• setting interrupt request groups to the plurality of slave devices, respectively, wherein each of the interrupt request groups comprises an interrupt request number;
• detecting whether an alarm pin is pulled down to a low level to send the interrupt request by an alarm detection module;
• selecting an interrupt mode by a selection module, wherein the interrupt mode is one of a level mode and a pulse mode;
• sending the interrupt request based on the interrupt mode selected by the selection module, by an interrupt request module;
• generating a master device receiving signal from the interrupt request group and the interrupt request number corresponding to the plurality of bus slave devices, by a control module;
• and
• transmitting the master device receiving signal to a master device through a data pin and a clock pin.

An interrupt request determination method of a bus slave device, the interrupt request determination method is used to determine an interrupt request of a plurality of slave devices in a system management bus device, the interrupt request determination method comprising:

• selecting an interrupt mode of the plurality of slave devices by a selection module, wherein the interrupt mode is one of a level mode, a pulse group mode and a pulse single mode;
• when the plurality of slave devices are in the level mode or the pulse group mode, setting an interrupt request group and an interrupt request number of the plurality of slave devices by a setting module, and when the plurality of slave devices are in the pulse group mode or the pulse single mode, setting a pulse width of the plurality of slave devices by a counter;
• connecting the plurality of slave devices to an alarm pin, a data pin and a clock pin of a master device, wherein each of the plurality of slave devices detects a level of the alarm pin through an alarm detection module;
• determining whether an interrupt request is sent based on whether the alarm pin is at a low level, and determining whether the interrupt mode is the pulse single mode, if not, generating a master device receiving signal and providing a corresponding interrupt group address and waiting for a response from the plurality of slave devices, and if so, determining which one of the plurality of slave devices issues the interrupt request based on a determination result of detecting the pulse width, by the master device.