Datasheet
Table Of Contents
- 1.0 Introduction
- 2.0 USB3320 Pin Locations and Definitions
- 3.0 Limiting Values
- 4.0 Electrical Characteristics
- 4.1 Operating Current
- 4.2 Clock Specifications
- 4.3 ULPI Interface Timing
- 4.4 Digital IO Pins
- 4.5 DC Characteristics: Analog I/O Pins
- 4.6 Dynamic Characteristics: Analog I/O Pins
- 4.7 OTG Electrical Characteristics
- 4.8 USB Audio Switch Characteristics
- 4.9 Regulator Output Voltages and Capacitor Requirement
- 4.10 Piezoelectric Resonator for Internal Oscillator
- 5.0 Architecture Overview
- FIGURE 5-1: USB3320 Internal Block Diagram
- 5.1 ULPI Digital Operation and Interface
- 5.2 USB 2.0 Hi-Speed Transceiver
- 5.3 Bias Generator
- 5.4 Integrated Low Jitter PLL
- 5.5 Internal Regulators and POR
- 5.6 USB On-The-Go (OTG)
- 5.7 USB UART Support
- 5.8 USB Charger Detection Support
- 5.9 USB Audio Support
- 5.10 Reference Frequency Selection
- 6.0 ULPI Operation
- 6.1 Overview
- 6.2 ULPI Register Access
- 6.3 Low Power Mode
- 6.4 Full Speed/Low Speed Serial Modes
- 6.5 Carkit Mode
- 6.6 RID Converter Operation
- 6.7 Headset Audio Mode
- 7.0 ULPI Register Map
- 8.0 Application Notes
- 8.1 Application Diagram
- TABLE 8-1: Component Values in Application Diagrams
- TABLE 8-2: Capacitance Values at VBUS of USB Connector
- FIGURE 8-1: USB3320 Application Diagram (Device, ULPI Output Clock mode, 24MHz)
- FIGURE 8-2: USB3320 Application Diagram (Device, ULPI Input Clock mode, 60MHz)
- FIGURE 8-3: USB3320 Application Diagram (Host or OTG, ULPI Output Clock Mode, 24MHz)
- 8.2 Reference Designs
- 8.3 ESD Performance
- 8.1 Application Diagram
- 9.0 Package Information
- Appendix A: Data Sheet Revision History
- The Microchip Web Site
- Customer Change Notification Service
- Customer Support
- Product Identification System
- Worldwide Sales and Service
2014-2016 Microchip Technology Inc. DS00001792E-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, C
BYP
, 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
C
OUT
VBUS
To USB Con.
R
VBUS
VBUS
VDD33
VBAT
GND
LDO
~
~
~
~
PHY
To OTG
C
BYP
Vdd
3.3V
VBUS
To USB Con.
R
VBUS