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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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WM8321 датащи(PDF) 133 Page - Wolfson Microelectronics plc |
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WM8321 датащи(HTML) 133 Page - Wolfson Microelectronics plc |
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133 / 253 page  Production Data WM8321 w PD, February 2012, Rev 4.0 133 The WM8321 can also indicate the status of the SYSOK signal via a GPIO pin configured as a “PVDD Good” output (see Section 21). A GPIO pin configured as “PVDD Good” output will be asserted when the PVDD is above the SYSOK threshold. Figure 27 PVDD Monitoring ADDRESS BIT LABEL DEFAULT DESCRIPTION R16385 (4001h) PVDD Control 15:14 SYSLO_ERR_ ACT 00 SYSLO Error Action Selects the action taken when SYSLO is asserted 00 = Interrupt 01 = WAKE transition 10 = Reserved 11 = OFF transition 11 SYSLO_STS 0 SYSLO Status 0 = Normal 1 = PVDD is below SYSLO threshold 6:4 SYSLO_THR [2:0] 010 SYSLO threshold (falling PVDD) This is the falling PVDD voltage at which SYSLO will be asserted 000 = 2.8V 001 = 2.9V … 111 = 3.5V 2:0 SYSOK_THR [2:0] 101 SYSOK threshold (rising PVDD) This is the rising PVDD voltage at which SYSOK will be asserted 000 = 2.8V 001 = 2.9V … 111 = 3.5V Note that the SYSOK hysteresis margin is added to these threshold levels. Table 78 PVDD Monitoring Control |
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