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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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LP3971 数据表(PDF) 18 Page - National Semiconductor (TI) |
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LP3971 数据表(HTML) 18 Page - National Semiconductor (TI) |
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18 / 42 page  I 2C Register Definitions I 2C CONTROL REGISTERS Register Address Register Name Read/ Write Register Description 8h’02 ISR R Interrupt Status Register A 8h’07 SCR1 R/W System Control Register 1 8h’0B BBCC R/W Backup Battery Charger Control Register 8h’0E SCR2 R/W System Control Register 2 8h’10 BOVEN R/W Buck Output Voltage Enable Register 8h’11 BOVSR R Buck Output Voltage Status Register 8h’12 LDOEN R/W LDO Output Voltage Enable Register 8h’13 LDOVS R LDO Output Voltage Status Register 8h’20 VCC1 R/W Voltage Change Control Register 1 8h’23 B1TV1 R/W Buck 1 Target Voltage 1 Register 8h’24 B1TV2 R/W Buck 1 Target Voltage 2 Register 8h’25 B1RC R/W Buck 1 Ramp Control 8h’29 B2TV1 R/W Buck 2 Target Voltage 1 Register 8h’2A B2TV2 R/W Buck 2 Target Voltage 2 Register 8h’2B B2RC R/W Buck 2 Voltage Ramp Control 8h’32 B3TV1 R/W Buck 3 Target Voltage 1 Register 8h’33 B3TV2 R/W Buck 3 Target Voltage 2 Register 8h’34 B3RC R/W Buck 3 Voltage Ramp Control 8h’38 BFR R/W Buck Function Register 8h’39 L21VCR R/W LDO2 & 1 Voltage Control Registers 8h’3A L43VCR R/W LDO4 & LDO3 Voltage Control Registers 8h’3B L5VCR R/W LDO5 Voltage Control Registers INTERRUPT STATUS REGISTER (ISR) 8h’02 Bit 7 6 5 4 3 2 1 0 Designation T100 T125 GPI2 GPI1 WU3L WUPS WUPT WUPS Reset Value 0 0 0 0 0 0 0 0 INTERRUPT STATUS REGISTER (ISR) 8h’02 DEFINITIONS Bit Access Name Description 7 - - Reserved 6 R T125 Status bit for thermal warming PMIC T>125˚C 0 = PMIC Temp. <125˚C 1 = PMIC Temp. >125˚C 5 R GPI2 Status bit for the input read in from GPIO 2 when set as Input 0 = GPI2 Logic Low 1 = GPI2 Logic High 4 R GPI1 Status bit for the input read in from GPIO 1 when set as Input 0 = GPI1 Logic Low 1 = GPI1 Logic High 3 R WU3L PWR_ON Pin Long Pulse Wake Up Status 0=1No wake up event 1 = Long pulse wake up event 2 R WUPS PWR_ON Pin Short Pulse Wake Up Status 0 = No wake up event 1 = Short pulse wake up event www.national.com 18 |
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