Microchip Technology EVB-USB2642, Руководство пользователя

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EVB-USB2642 Evaluation Board User’s Guide
DS50002202A-page 12
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2013 Microchip Technology Inc.
• Charging profiles (Port 3) suitable for iPhone
®
, iPad
®
, and iPod
®
• 2.5A maximum current (Port 3)
• Active Current limiting and monitoring (Port 3)
1.3 GENERAL DESCRIPTION
The EVB-USB2642 is a demonstration and evaluation platform featuring the USB2642
Ultra Fast USB 2.0 Multi-Format Flash Media Controller, the UCS1001 Port Power
Controller with charger emulation and the USB hub combo on a 4-layer RoHS
compliant Printed Circuit Board (PCB). It is designed to support internal default
settings, an external certification chip, an SMBus header interface and an SPI flash
both for external firmware download, and also an external I
2
C EEPROM for customized
functionality.
An 8-Mbit SPI flash device can be populated on the evaluation board to provide
firmware updates via USB by using the provided USBDM utility. For more information,
please see the USBDM manual.
The default configuration can be changed by the SPI flash device, the SMBus header
interface or the external certification chip. Alternatively, the default configuration can be
changed by installing an EEPROM into the provided footprint. When this is done, the
SPI flash device must be removed to avoid signaling conflicts.
Figure 1-1 and
Figure 1-2 show the top and bottom level silk screen and copper layers, respectively.
FIGURE 1-1: TOP LEVEL SILK SCREEN AND COPPER LAYERS