Wireless USB

Cypress Semiconductor has begun sampling a 2.4 GHz radio system-on-a-chip that it feels will challenge the role of other wireless solutions such as ‘Bluetooth’ and ‘ZigBee’.

The WirelessUSB LS device communicates at a distance of up to 10 metres, with an average latency of less than four milliseconds.

Featuring an integrated radio transceiver plus digital baseband, it is targeted at manufacturers of keyboards, mice, and video game controllers.

Operating in the 2.4 GHz global ISM band, WirelessUSB LS allows developers to build products that will operate world-wide, regardless of regional frequency requirements.

Cypress has employed a unique DSSS (Direct Sequence Spread Spectrum) coding scheme in the design of the chip, enabling it to support thousands of devices in close proximity, making it suitable for residential, office and classroom applications.

The WirelessUSB LS is available as a transceiver or a transmit-only device, providing bi-directional or unidirectional RF transmission at 62.5 kbps. Both devices have a typical standby current of 1 microamp.

Early adopters of Cypress’s WirelessUSB technology include NMB, a leading keyboard maker, and Saitek, a manufacturer of video game peripherals.

The Cypress WirelessUSB LS transmit-only device (CYWUSB6932) is priced starting at $1.95 in 100,000-unit quantities; the transceiver device (CYWUSB6934) begins at $2.20.