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ALC5611-GR Datasheet(PDF) 28 Page - Realtek Semiconductor Corp. |
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ALC5611-GR Datasheet(HTML) 28 Page - Realtek Semiconductor Corp. |
28 / 73 page ALC5611 Datasheet AC’97 Audio Codec + Touch Panel Controller 20 Track ID: JATR-1076-21 Rev. 1.1 7.10. Power Management The ALC5611 supports a standard power down control register as defined in AC’97 (Reg26). More detailed Power Management control is supported in Reg 3C & 3E. Each particular block will only be active when both Reg26 and Reg3C/3E are set to ‘Enable’. 7.10.1. Sleep Mode When PR4 (Reg26) is set, the ALC5611 will enter Sleep Mode. Before entering sleep mode, the driver can set other control bits to save power according to system requirements. The following functions should be kept operating during sleep mode: • Pen-down Detection • GPIO and Interrupts • Analog to analog path when control registers Reg 3C & 3E are enabled There are two methods to wake the ALC5611 from Sleep mode • Warm Reset and Cold Reset from AC Link • Wake-up from GPIO (configured as Input) and Internal event signal (pen-down, over-temperature) when the wake-up bit is set at Reg52. Figure 9. Example of ALC5611 Power-Down/Power-Up Flow |
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