FAQ

Bus Devices and I2C

ISP1122A
What is ISP1122A?
What are the configuration modes of ISP1122A?
What is the customized configuration? How do I implement it?
Does ISP1122A support the purely self-powered mode?
Can I implement a 2 through 4 downstream port hub instead of through 5
Instead of EEPROM, can a microcontroller be used as an I�C slave interface?
What is the operating power consumption?
What is the suspend power consumption?
Can I implement a gradual turn-on for the downstream port?
What is the maximum turn-on delay I can have on the downstream port powering?
What is the maximum power I can extract from the internal regulator?
How can I change the Vendor ID and Product ID?
Can I change the String descriptors?
What EEPROM address does ISP1122A poll for?
How do I change the descriptor to allow the hub to be enumerated as bus-powered or self-powered?
What is meant by "configurable 2 to 5 downstream ports"?
What is meant by low voltage reset circuit?
What is hybrid-powered?