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WM8321 数据表(PDF) 146 Page - Wolfson Microelectronics plc |
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WM8321 数据表(HTML) 146 Page - Wolfson Microelectronics plc |
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146 / 253 page  WM8321 Production Data w PD, February 2012, Rev 4.0 146 REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R16386 (4002h) Thermal Monitoring 3 THW_HYST 1 Thermal Warning hysteresis 0 = 8 degrees C 1 = 16 degrees C 1:0 THW_TEMP [1:0] 10 Thermal Warning temperature 00 = 90 degrees C 01 = 100 degrees C 10 = 110 degrees C 11 = 120 degrees C Register 4002h Thermal Monitoring REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO 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. 12 REF_LP 0 Low Power Voltage Reference Control 0 = Normal 1 = Low Power Reference Mode select Note that Low Power Reference Mode is only supported when the Auxiliary ADC is disabled. 11:10 PWRSTATE_D LY [1:0] 10 Power State transition delay 00 = No delay 01 = No delay 10 = 1ms 11 = 10ms 9 SWRST_DLY 0 Software Reset Delay 0 = No delay 1 = Software Reset is delayed by PWRSTATE_DLY following the Software Reset command Register 4003h Power State REGISTER ADDRESS BIT LABEL DEFAULT DESCRIPTION REFER TO R16388 (4004h) Watchdog 15 WDOG_ENA 1 Watchdog Timer Enable 0 = Disabled 1 = Enabled (enables the watchdog; does not reset it) Protected by security key. 14 WDOG_DEBU G 0 Watchdog Pause 0 = Disabled 1 = Enabled (halts the Watchdog timer for system debugging) |
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