1 Overview

The Cheetah SPI Host Adapter is a high-speed SPI to USB host adapter. The Cheetah GUI software interacts directly with the Cheetah adapter.

The Cheetah GUI provides basic access to all the functionality of the Cheetah adapter. It is built upon the freely available Cheetah SPI Software API as detailed in the Cheetah SPI Host Adapter datasheet.

Top

1.1 Cheetah SPI Host Adapter

The Cheetah SPI Adapter can function as an SPI master device. It is capable of communicating over all four modes of SPI at up to 40+ MHz. The Cheetah adapter also has three independently controllable slave select lines.

SPI is a serial protocol for communicating between devices. Information about its specifications can be found in the Cheetah SPI Host Adapter datasheet and on the Total Phase website: http://www.totalphase.com/.

Top

1.2 Changes in version 1.10

• The minimum and default bit rate is now 100 kHz.

• Added the ability to insert delays between the bytes of a message.

• Added support for 64-bit Windows. Note that the Cheetah GUI software will run on 64-bit systems as a 32-bit application.