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AXP288D датащи(PDF) 47 Page - Shenzhen X-Powers Technology Co ., Ltd

номер детали AXP288D
подробное описание детали  PMIC Optimized For Multi-Core High-Performance System
PDF  110 Pages
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AXP288D датащи(HTML) 47 Page - Shenzhen X-Powers Technology Co ., Ltd

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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.
47
For the case of battery charger detection enabled, once the USB charger detection is completed, VBUS current limit will
be guided by the result of the detection. Subject to the type of USB charger detected, the current limit set in REG 35H[7:4] will
be auto updated by the value set in REG 30H[1:0]. For example, if the BC detection result indicates SDP, the current limit in REG
35H[7:4] will be set to 500mA (900mA if it is USB 3). If the detected USB charger is CDP or DCP, the current limit in REG 35H[7:4]
will then be updated according to the setting in REG 30H[1:0].
Table 9-26
REG 2FH[7:5]
Current limit
Description
SDP
500mA
USB connected. After communication, CPU can identify
USB3.0,then change the current limit to 900mA
Other
REG30H[1:0]
VBUS with the BC detection:
AXP288 has battery charger detection module that capable of detecting type of USB charger plug onto the port. Below is
the battery charger detection flow.
.
VBUS
Insert
BC1.2 detect
2C[2] = 1
BC1.2 result?
SDP
Other
Set current limit
30_[1:0]
VBUS Path
Select and
Charge Enable
VBUS Valid
Status Set
HOST USB
Connect
BCD Enable?
USB3.0?
Set to 900mA
2C[0]=1?
2C[2]=0?
Dead battery
flow in off mode
Y
N
Set to 500mA
DP/M
Floating?
D Line Floating
Detection
N
Y
Figure 9-21



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