The USB3320 ULPI transceiver circuit has a Micrel MIC2544 high-side programmable current
limit switch (U100). This switch has an open-drain output fault ag on pin 2, which turns on red
LED DS37 if over current or thermal shutdown condions are detected.
Note: As shown in the following gure, the shield for the USB 2.0 type-A connector (J308) can be ed to
GND by a jumper on header J300 pins 1-2 (see Default Jumper and Switch Sengs). The USB shield can
oponally be connected through a series capacitor to GND by installing a capacitor (body size 0402) at
locaon C2762 and inserng a jumper across pins 2-3 on header J300.
Figure 9: USB3320 USB2.0 Connector J308 Shield Connection Options
X26017-111821
PMC MIO[26:36, 51] Bank 501: Secure Digital (SD)
Card IF
[Figure 3, callout 11]
Chapter 3: Board Component Descriptions
UG1582 (v1.0) February 21, 2023 www.xilinx.com
VPK180 Board User Guide 34
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