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USB3320 データシート(PDF) 23 Page - Microchip Technology

部品番号 USB3320
部品情報  Highly Integrated Full Featured Hi-Speed USB 2.0 ULPI Transceiver
PDF  70 Pages
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メーカー  MICROCHIP [Microchip Technology]
ホームページ  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

USB3320 データシート(HTML) 23 Page - Microchip Technology

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 2014-2015 Microchip Technology Inc.
DS00001792B-page 23
USB3320
The USB3320 can be powered from an external 3.3V supply as shown below in Figure 5-7. When using the external
supply, both the VBAT and VDD33 pins are connected together. The bypass capacitor, CBYP, is recommended when
using the external supply.
For peripheral only or host only operation, the VBAT supply shown below in Figure 5-8 may be connected to the VBUS
pin of the USB connector for bus powered applications. In this configuration, external overvoltage protection is required
to protect the VBAT supply from any transient voltage present at the VBUS pin of the USB connector.
FIGURE 5-6:
POWERING THE USB3320 FROM A BATTERY
FIGURE 5-7:
POWERING THE USB3320 FROM A 3.3V SUPPLY
VBUS
VDD33
VBAT
GND
LDO
PHY
To OTG
COUT
VBUS
To USB Con.
RVBUS
VBUS
VDD33
VBAT
GND
LDO
PHY
To OTG
CBYP
Vdd
3.3V
VBUS
To USB Con.
RVBUS



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