BD7168GU-E Datasheet, PDF (35/60 Pages) Rohm – USB Switching Charger IC Integrating a USB Adapter Automatic Detection Function

BD7168GU
○ Timing chart of USB charger detector ①
STANDARD DOWNSTREAM PORT (USB 1.0 / USB2.0)
VBUS at
Portable
Device
1sec
USB_SW
VREG-vf
VDP_SRC _VSRC
IDAT_SINK
on
RDPPD
off
Vlogic_hi
D+
VREG-vf
VDP_SRC
Vlogic_hi
D- VDP_SRC
TDCD_DBNC _{TVDPSRC_ON VDPSRC_ON}
90msec
90msec
90msec
①DCD
②DPVL
③CPD
10msec
0.5msec
0.5msec
0.5msec
D^検ete^出cti^終on^了end
Figure 10. Standard downstream port detection timing chart
①DCD
②DPVL
③CPD
④CTD
:Data Contact Detect
:D+ Voltage Level detect
:Charging Port Detect
:Charging Type Detect
USB
Assert
開_sta始_rt
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20012.10.09 Rev.001