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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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900844 데이터시트(PDF) 85 Page - Freescale Semiconductor, Inc |
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900844 데이터시트(HTML) 85 Page - Freescale Semiconductor, Inc |
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85 / 118 page  Analog Integrated Circuit Device Data Freescale Semiconductor 85 900844 FUNCTIONAL DEVICE OPERATION POWER SUPPLIES VRFAULT Every supply is equipped with a fault reporting signal called xxxFAULT, where xxx is the name of the power supply. This FAULT signal is an OR function of all of the following possible faults, or just a subset of them depending on the power supply: • Output under-voltage • Output over-voltage • Over-current • Short-circuit Reference each power supply’s section for more information on what faults are included, and how the supply protects itself and the load in response to the fault. All of the xxxFAULT signals from all power supplies are ORed together into the BATOCP interrupt signal, which if unmasked, sets the VRFAULT 1st level interrupt that causes the PMICINT pin to assert, notifying the SC of a system event. The SC can service the VRFAULT register and access the FAULTx registers for more information on which supply caused the fault. The SC can then take different measures, depending on the supply in question. The xxxFAULT signals are stored in the Freescale defined registers section (Addr 0x180 - 0x1FF), which is meant for extended functionality. Table 50. FSLFAULT1 Fault Status Register Structure and Bit Description Name Bits Description FSLFAULT1 (ADDR 0X1CC - R/W - DEFAULT VALUE: 0X00) VCCFAULT 0 VCC Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VNNFAULT 1 VNN Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VDDQFAULT 2 VDDQ Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists V21FAULT 3 V21 Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists V15FAULT 4 V15 Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists RSVD 7:5 Reserved Table 51. FSLFAULT2 Fault Status Register Structure and Bit Description Name Bits Description FSLFAULT2 (ADDR 0X1CD - R/W - DEFAULT VALUE: 0X00) RSVD 2:0 Reserved VBGFAULT 3 VBG Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VCCAFAULT 4 VCCA Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VCC180FAULT 5 VCC180 Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VPNL18FAULT 6 VPNL18 Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists VPMICFAULT 7 VPMIC Regulator Fault Signal x0 = No Fault Exists x1 = Fault Exists |
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