
Datasheet
Chapter 8 Implementation Notes
The following sections consist of select functional explanations to aid in implementing the Hub Controller into a system.
8.1Configuration Implementations
The USB20H04 is normally configured by an external EEPROM connected directly to the serial interface. Typical circuit diagrams are shown below. For a more detailed discussion of the serial interface, including how to configure the USB20H04 using the SMBus mode, please see Application Note 9.29, "USB20H04 4- Port USB 2.0 Hub Controller, Configuration Programming". The Application Note also discusses designing a Hub system that supports In Circuit Programming of the EEPROM.
8.1.1Interfacing a 2-wire Serial EEPROM
The I2C EEPROM interface is designed to attach to a single “dedicated” I2C EEPROM. It conforms to the
Figure 8.1 -
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