Wired Network

Universal Connectivity: USB

The Universal Serial Bus (USB) interface has become the industry standard for connectivity in the world of computing and consumer electronics. Stemming from the PC industry, USB was designed to replace legacy serial and parallel interfaces. More recently, the USB standard has been widely adopted by mobile devices as the high speed interface for multimedia, data transfer and synchronization. The latest USB 2.0 standard supports Hi-Speed with up to 480Mbits/sec throughput. The On-The-Go capability allows two devices to connect to each other without having a computer involved.

QuickLogic USB solutions combine a Hi-Speed USB 2.0 OTG controller with a Hi-Speed USB PHY, making it the most complete USB solution in the market. It also supports the latest UTMI+ Low Pin Interface (ULPI), a low pin-count USB interface between the USB link layer and USB Transceiver Macrocell (PHY). ULPI is designed to drive down a system cost, routing complexity and board space. A “Pseudo-PHY” can be implemented in the low power customizable building blocks to enable a PHY-less interchip ULPI interconnect.

Hi-Speed USB 2.0 OTG solution supports:

• Single port, Hi-speed USB 2.0 OTG controller with integrated high speed PHY
• High speed at 480 Mb/s, full speed at 12 Mb/s, and low speed at 1.5 Mb/s operation
• 12-signal ULPI interface available through customizable building blocks
• 8 Kbyte SRAM on-chip buffer to improve data transfer performance
• Dedicated DMA controller to offload CPU from heavy data transfer and manipulation
• “Pseudo-PHY” option available for PHY-less interchip ULPI interconnect
• Full-speed CEA-936-A I2C carkit interface

High Speed USB 2.0 OTG Solution

Applications:

• Data synchronization between mobile devices and PC/Servers
• ULPI-based USB OTG carkit for hands-free operation
• OTG function allows smartphones and PDAs to directly connect to printers and projectors
• Mobile device accessories and docking stations
• Bridging solutions from USB to other interfaces such as SDIO, PCI, etc.