Usb 2.0 Topology Guidelines; External Topologies; Sample Over Current Protection Circuit; Usb 2.0 Microusb Topology - Intel Quark SoC X1000 Design Manual

Universal Serial Bus 2.0 Design Guidelines—Intel
Figure 25.

Sample Over Current Protection Circuit

0.1uF
USB_PWR_EN0
Each overcurrent pin protects one USB port. It is system software's (BIOS)
responsibility to program the overcurrent registers of the given USB controller correctly
and to make sure that each USB port is protected by only one overcurrent pin.
Operation with more than one overcurrent pin mapped to a port is undefined. See the
®
Intel Quark SoC X1000 Datasheet for more details.
5.3

USB 2.0 Topology Guidelines

5.3.1

External Topologies

The external topology refers to the routing of USB signals to a microUSB connector. It is
recommended that each USB data line be routed with a common mode choke and ESD
protection.
Figure 26.

USB 2.0 MicroUSB Topology

TX
June 2014
Order Number: 330258-002US
®
Quark™ SoC X1000
V5 Always
on
IN
EN
10K
SoC
Breakout
L
A1
L
A1'
Current Limited
Power Switch
(TPS2051BDBVR)
ESD
DIODE
L L
B C
L L
B' C'
V3P3 S0
10K
OUT
USB_OC0_N
OC_N
GND
MicroUSB
L
E
L
E'
®
Intel Quark™ SoC X1000
PDG
49