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MAX34440 Datasheet(PDF) 29 Page - Maxim Integrated Products |
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MAX34440 Datasheet(HTML) 29 Page - Maxim Integrated Products |
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29 / 43 page  PMBus 6-Channel Power-Supply Manager 29 IOUT_OC_WARN_LIMIT (46h) The IOUT_OC_WARN_LIMIT command sets the value of the current that causes an overcurrent warning. This value is typically less than the overcurrent fault threshold in IOUT_OC_FAULT_LIMIT. The 2 data bytes are in DIRECT format. In response to violation of the IOUT_OC_WARN_LIMIT, the device does the following: 1) Sets the NONE OF THE ABOVE bit in STATUS_BYTE. 2) Sets the NONE OF THE ABOVE, IOUT, and MFR bits in STATUS_WORD. 3) Sets the OC_WARN bit in STATUS_MFR_SPECIFIC. 4) Notifies the host using ALERT assertion (if enabled in MFR_MODE). IOUT_OC_FAULT_LIMIT (4Ah) The IOUT_OC_FAULT_LIMIT command sets the value of the current that causes an overcurrent fault. The factory default value for IOUT_OC_FAULT_LIMIT is 0000h. This value disables the device from measuring current. Any nonzero positive value written to IOUT_OC_FAULT_LIMIT causes the device to enable current measurement. The 2 data bytes are in DIRECT format. In response to violation of the IOUT_OC_FAULT_LIMIT, the device does the following: 1) Sets the IOUT_OC bit in STATUS_BYTE. 2) Sets the IOUT, IOUT_OC, and MFR bits in STATUS_WORD. 3) Sets the OC_FAULT bit in STATUS_MFR_SPECIFIC. 4) Responds as specified in the MFR_FAULT_RESPONSE. 5) Notifies the host using ALERT assertion (if enabled in MFR_MODE). OT_FAULT_LIMIT (4Fh) The OT_FAULT_LIMIT command sets the temperature, in degrees Celsius, of the selected temperature sensor at which an overtemperature fault is detected. The 2 data bytes are in DIRECT format. In response to the OT_FAULT_LIMIT being exceeded, the device does the following: 1) Sets the TEMPERATURE bit in STATUS_BYTE. 2) Sets the TEMPERATURE and MFR bits in STATUS_WORD. 3) Sets the OT_FAULT bit in STATUS_MFR_SPECIFIC. 4) Responds as specified in MFR_FAULT_RESPONSE. 5) Notifies the host using ALERT assertion (if enabled in MFR_MODE). Table 14. IOUT_OC_FAULT_LIMIT IOUT_OC_FAULT_LIMIT VALUE DEVICE RESPONSE (ON THE ASSOCIATED PAGE) 8000h to FFFFh Negative values are invalid. 0000h Current measurement disabled. 0001h to 7FFFh Current measurement enabled. |
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