Table of Contents
Advertisement
UM-PM-022
DA9318 Direct Charging Reference Board
5.2
USB Interface
The DA9318 direct charging board uses an ATMEL
transceiver, programmed to deliver the following functionalities:
●
2
I
C control interfaces.
●
Discrete digital IO control (General Purpose Input Output (GPIO) and dedicated functions).
5.2.1
USB Power and GUI Reset
The USB is powered by an on-board regulator (VR2), see
S3 shuts down the on-board regulator VR2, powering down the supply for the SAM3U (USB I
interface). This resets the GUI communication with the reference board.
Figure 7: USB Interface Connector and Reset Switch
Table 2: Power Configuration Switch
Switch Name
Reference
Designator
USB RESET
S3
5.3
Power Supplies
The DA9318 direct charging board is powered up when a power source is connected to IN (J12). IN
operating voltage range is +5.5 V to +10.5 V.
●
The VDD_IO voltage is generated by an on-board regulator (VR1) supplied from the +5 V USB.
By default, the on-board generated VDD_IO is +3.3 V.
NOTE
For correct operation, connect the reference board to a USB port capable of supplying 500 mA.
User Manual
CFR0012
®
SAM3U
Figure
Type
Function
Push
Shuts down the on-board regulator that generates the
button
interface supply
Revision 3.2
14 of 39
®
microcontroller as the USB
7. Pressing the USB RESET switch
© 2022 Renesas Electronics
2
C
16-Feb-2022
Advertisement
Table of Contents
