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tên linh kiện AXP288D
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AXP288
PMIC Optimized For Multi-Core High-Performance System
AXP288 Datasheet V1.06
Copyright © 2014 X-Powers Limited. All Rights Reserved.
23
Off State
Charger Insertion
Battery level >
boot threshold?
Standby State (S0iX)
Charging
PMIC Boots to
standby state
yes
SoC de-asserts
SLP_S0IX_B Pin
Active State (S0)
PMIC completes
boot process asserts
PWRGOOD signals
SoC Boots OS
Figure 9-1
Power on from battery insertion
The PMIC should be able to start the boot sequence from a battery insertion. A battery insertion is detected from a
rising voltage on the battery node. If the battery level is above the battery boot threshold, the PMIC will continue the boot
process.
Off State
Battery insertion
Battery level >
boot threshold?
Standby State (S0iX)
Shutdown
PMIC Boots to
standby state
yes
SoC de-asserts
SLP_S0IX_B Pin
Active State (S0)
PMIC completes
boot process asserts
PWRGOOD signals
SoC Boots OS
Figure 9-2
Power on from power key pressed
POK----Power On Key
The Power On Key(POK) can be connected between PWRON pin and GND of AXP288. AXP288 can automatically
identify the status and then correspond respectively.
The PMIC should be able to start the boot sequence from a power on key pressed. The PMIC has a configurable timer
to detect the power on key hold time. Power on key signal in AXP288 is referred as POK. Once falling edge is detected on



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