C-Bus Interface - Philips UM10011 User Manual

Philips Semiconductors
5.8. I
The ISP1521 can use either its USB descriptors from the internal ROM, or from an external I
Bus
Table 5-3).
Table 5-3: Mode Selection Using J11 and J12
*—Default settings.
An external I
through the CN1 connector.
Note: The I
User manual
Figure 5-2: Windows Reporting of the Self-Powered Mode
2

C-Bus Interface

TM
EEPROM or microcontroller. Mode selection is done through jumpers J11and J12 (see
J11 J12
ON ON
OFF OFF
2
C-Bus controller acting as a master can also be used to update hub descriptors
2
C-Bus external EEPROM cannot be programmed on-board.
ISP1521 Hi-Speed USB Hub Demo Board
Mode
Internal ROM
I 2 C-Bus EEPROM*
Rev. 04.00 — 17 June 2004
UM10011_4
SCL SDA
LOW LOW
HIGH HIGH
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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