Cypress Semiconductor SL811HS Manual de usuario Pagina 14

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Cypress Semiconductor Corporation
SL811HS and SL811HST: Application Notes
©2001 Cypress Semiconductor Corporation. All rights reserved. The information
and specifications contained in this document are subject to change without
notice.
Date: 07/26/01
Revision: 1.21
Page: 14
1. CPU_GPIO detects that a cable is for Host.
2. Start supplying USB Bus power.
Connector for Slave
GND
USB Bus power switch
D-
VBUS
CPU_GPIO
VCC
R
6
D+
1
1. CPU_GPIO detects that a cable is for Slave.
2. Never supply USB Bus power.
(Example.2) Using two connectors on host side.
See SL811HS and SL811HST: Application Notes page.8” for the layout.
Supplier must explain to the customer, Host and Slave must not be used at the same time
because it will break the system.
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