Integrate dual-role USB with 16-bit processing

Cypress' EZ-Host CY7C67300 and EZ-OTG CY7C67200 are dual-role USB devices that comply with the USB 2.0 specification, support both full- and low-speed traffic, and are fully compatible with the USB-OTG (On-the-Go) Supplement (Picture). The 16-bit RISC microcontroller devices include 16 kbytes of RAM; BIOS to handle a portion of the USB-processing, enabling them to operate as hosts or peripherals; and a configurable I/O block supporting HSS (high-speed-serial) interfaces, SPIs (system-packet interfaces), and HPIs (host-port interfaces).

The EZ-Host targets nonhandheld USB applications and can operate as a stand-alone processor, such as for a host storage device, or it can operate as a USB coprocessor that can perform some independent functions. It includes two USB serial-interface engines each with two ports supporting as many as four downstream ports in host mode, one or two upstream ports in peripheral mode, or one upstream and two downstream ports for dual mode. EZ-OTG is a subset of the EZ-Host and targets mobile devices that need USB-OTG support with a power-boost circuit that operates as low as 2.7V. It also includes two USB serial-interface engines but with one port each supporting a total of one or two downstream or upstream ports.

Cypress' development support includes programming tools, Linux operating system and drivers, host/peripheral stacks, functional examples, and framework firmware. The functional examples illustrate USB-OTG, SPI and HPI, multiport hosting, and simultaneous host and peripheral operation. The framework firm-ware accommodates host, peripheral, and OTG support for stand-alone and coprocessor configurations. General sampling of the EZ-Host and EZ-OTG begins in April. The early-release version of the development kit will be available in May. The EZ-Host is available in a 100-pin TQFP for $4.99 (10,000), and the EZ-OTG comes in a 48-ball FBGA for $3.99 (10,000).

Cypress, 1-408-943-2600, www.cypress.com.