μ
PD720210
6. Functions Description
R19UH0093EJ0200 Rev.2.00
Page 41 of 59
May 26, 2014
6.1.2
HW configuration requirement
Some Battery charging functions change the port type in each device state. VBUS shall be cut off temporarily
when the charging port is changed, as required by the Battery Charging Specification. Thus, VBUS shall be
controlled by a power switch controlled by PPONxB for each port. And it is recommended to use power
switches having the VBUS discharge function.
Figure 6-1. VBUS Control Configuration with Battery Charging Function
6.1.3
Downstream port VBUS control
VBUS of Downstream port set to OFF in the below case.
-
When mode is changed from CDP to DCP, FVO1 or FVO2 mode.
-
When BC mode is changed to another BC mode.
Figure 6-2. Downstream Port VBUS Control
PPON1
OCI1B
PPON2
OCI2B
PPON3
OCI3B
PPON4
OCI4B
Vin
EN
FLG
Vin
EN
FLG
Vin
EN
FLG
Vin
EN
FLG
VBUS
out
VBUS
out
VBUS
out
VBUS
out
5V source
Power switch
Port1
Port2
Port3
Port4
μ
PD720210
Summary of Contents for Renesas mPD720210
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