CT25100

The CT25100 is a Full-Speed USB controller, which enumerates as Billboard Device. It integrates all necessary infrastructures, including the CT20101, SOF-Calibrated 48MHz USB Clock, which doesn’t need any external component, thus offering a cost-effective solution. CT25100 supports bus-powered mode and enables efficient system power management with suspend and remote wake-up signals.

CT25100 handles requests from the USB host reading the required information from a virtual address space which maps to a combination of ROM and RAM. The ROM contains Billboard specific “boilerplate” data mostly specified in the USB Device Class Definition for Billboard Devices specification; the latter contains product specific data and dynamic information.

Features

• USB 2.0-certified, Full-Speed (12 Mbps)
• Supports native Billboard Device class driver
• Integrated USB termination resistors
• Allows the use of SRAM and ROM for storing configuration parameters
• Billboard Device class specific descriptors
• Clocking: Integrated 48-MHz clock oscillator
• Supports bus-/self-powered configurations
• USB Suspend mode for low power
• No external crystal
• No external components
• Voltage and current references, test infrastructures, included