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L9663 数据表(PDF) 24 Page - STMicroelectronics |
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L9663 数据表(HTML) 24 Page - STMicroelectronics |
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24 / 106 page  Power supply L9663 24/106 DS11401 Rev 6 2.6 Reset handling Four different sources are considered in resetting the IC: POR (Power On Reset, see Section 2.1) RESETN pin SW_RESET CKER_DETECT All these sources of reset, when asserted, will switch off the PSIx lines and reset to default value the device registers (including those registers for configuration). Additionally to the hardware resets (by pin/POR), a reset can also be initiated by software (SW_RESET). The command SW_RESET initiates a soft reset-sequence if all of the following conditions are fulfilled (see also the DCR register in SPI section): unlocked state: it means that if the UNLOCK command is not received the command SW_RESET has no effect; The command SW_RESET is sent in the next SPI communication of the unlock command. A SW_RESET initiates soft reset-sequence and resets all digital parts of the device, except POR and RST flag that is set in SR3 register. |
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