The SK7300 joystick mouse encoder is an easy-touse single chip encoder that interfaces any analog joystick sensors such as CTS 252 and 254 series, and Fujitsu FID-828 ErgoTrac Hall-effect sensors. Equipped with an advanced motion algorithm, the SK7300 offers low power consumption in small footprint package. The device can be linked through either the serial or PS/2 type mouse port of the host system.
The SK7300 is compatible with the IBM and Microsoft two-button and the Logitech three-button mouse protocols. The IC also supports Sprintek extended mouse protocols to allow the host to control the motion parameters and other parameters. Communication through the serial port is half-duplex at a fixed speed of 1200 Baud. PS/2 communication is bidirectional at 10 Kbps.
The SK7300 implements all commands to and from the host system, as defined in the IBM PS/2 mouse communication protocol and extended Sprintek SK7300 mouse protocol defined in this document. Typically, consuming 50uA in idle state, the SK7300 is ideal for battery-operated systems.