EVB-USB3503 QFN
EVALUATION BOARD
USER’S GUIDE
2014 Microchip Technology Inc.
DS50002252A-page 10
Chapter 2. Hardware Configuration
2.1
HARDWARE DESCRIPTION
2.1.1
Port Assignment
The USB 2.0 downstream ports are numbered 1 through 3. All downstream ports have
USB 2.0 connectors with USB 2.0 compliant decoupling and separate shield grounds.
Power to all downstream ports is controlled through the MIC2026-1B device U4. When
port power is enabled via the PRTPWR pin on the USB3503, port power is delivered to
all 3 downstream USB ports.
The EVB-USB3503 QFN must be connected to an HSIC upstream host via the DATA
(J5) and STROBE (J4) connectors using the provided U.FL coaxial cables. When
removing these cables from the EVB for any reason, the provided HSIC Extraction tool
must be used.
shows the recommended usage of the HSIC extraction tool
per the Hirose U.FL data sheet on proper use of the plugs.
Note:
Do not exceed 4 A total current consumption from the + 5 VDC power
supply.
