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WM8321 数据表(PDF) 33 Page - Wolfson Microelectronics plc |
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WM8321 数据表(HTML) 33 Page - Wolfson Microelectronics plc |
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33 / 253 page  Production Data WM8321 w PD, February 2012, Rev 4.0 33 The ON Source and OFF Source register fields are defined in Table 2. ADDRESS BIT LABEL DEFAULT DESCRIPTION R16387 (4003h) Power State 15 CHIP_ON 0 Indicates whether the system is ON or OFF. 0 = OFF 1 = ON (or SLEEP) OFF can be commanded by writing CHIP_ON = 0. Note that writing CHIP_ON = 1 is not a valid ‘ON’ event, and will not trigger an ON transition. 14 CHIP_SLP 0 Indicates whether the system is in the SLEEP state. 0 = Not in SLEEP 1 = SLEEP WAKE can be commanded by writing CHIP_SLP = 0. SLEEP can be commanded by writing CHIP_SLP = 1. 11:10 PWRSTATE_DLY 10 Power State transition delay 00 = No delay 01 = No delay 10 = 1ms 11 = 10ms R16398 (400Eh) ON Source 15 ON_TRANS 0 Most recent ON/WAKE event type 0 = WAKE transition 1 = ON transition 11 ON_GPIO 0 Most recent ON/WAKE event type 0 = Not caused by GPIO input 1 = Caused by GPIO input 10 ON_SYSLO 0 Most recent WAKE event type 0 = Not caused by PVDD 1 = Caused by SYSLO threshold. Note that the SYSLO threshold cannot trigger an ON event. 7 ON_WDOG_TO 0 Most recent WAKE event type 0 = Not caused by Watchdog timer 1 = Caused by Watchdog timer 6 ON_SW_REQ 0 Most recent WAKE event type 0 = Not caused by software WAKE 1 = Caused by software WAKE command (CHIP_SLP = 0) 5 ON_RTC_ALM 0 Most recent ON/WAKE event type 0 = Not caused by RTC Alarm 1 = Caused by RTC Alarm 4 ON_ON_PIN 0 Most recent ON/WAKE event type 0 = Not caused by the ON pin 1 = Caused by the ON pin 3 RESET_CNV_UV 0 Most recent ON event type 0 = Not caused by undervoltage 1 = Caused by a Device Reset due to a Converter (LDO or DC-DC) undervoltage condition 2 RESET_SW 0 Most recent ON event type 0 = Not caused by Software Reset 1 = Caused by Software Reset |
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