Справочник Пользователя для Philips UM10011

 

 

 

 

 

 

© Koninklijke Philips Electronics N.V. 2004. All rights reserved. 

 

 

 

 

 

The ISP1521 can use either its USB descriptors from the internal ROM, or from an external I

2

C-

Bus

TM

 EEPROM or microcontroller. Mode selection is done through jumpers J11and J12 (see 

Table 5-3). 

 

 
 

*—Default settings. 

 

An external I

2

C-Bus controller acting as a master can also be used to update hub descriptors 

through the CN1 connector. 

Note: The I

2

C-Bus external EEPROM cannot be programmed on-board. 

ON ON 

Internal 

ROM LOW  LOW 

OFF OFF 

I

2

C-Bus EEPROM* 

HIGH 

HIGH