STPCI2HEYC(2002) データシートの表示（PDF） - STMicroelectronics

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STPCI2HEYC
(Rev.:2002)

X86 Core PC Compatible System-on-Chip for Terminals

STMicroelectronics 

DESIGN GUIDELINES

6.3.10. USB INTERFACE

The STPC integrates a USB host interface with a

2-port Hub. The only external device needed are

the ESD protection circuits USBDF01W5 and a

USB power supply controller. Figure 6-16

describes a typical implementation using these

devices.

Figure 6-16. Typical USB implementation

USBDMNS[0]

USBDPLS[0]

USBDMNS[1]

USBDPLS[1]

USBDF02W5(Note1)

R = 15 Ohm1

3

4

1

5

R = 152Ohm1

USBDF02W5(Note1)

R = 15 Ohm1

3

4

1

5

R = 152Ohm1

Connector

1

29

3 10

4

5

6 11

7 12

8

GND

OC

POWERON

STPC

5V

5V

5V

2,3

5

6,7,8

TPS2014

4

1

USBVCC

100nF 2x 47uF

100nF

TPS2014

Power Decoupling

Note 1; The ESD protection will be adequate for most applications. In some instances, problems may occur if the devices on the

USB chain do not have enough power to drive the signals adequately. We therefore recommend that you replace the part with de-

screte components and reduce the value of the capacitor.

88/111

Issue 1.0 - July 24, 2002

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