The MAX3111E evaluation kit (EV kit) provides a proven design to evaluate the MAX3111E SPI™/MICROWIRE™-
compatible universal asynchronous receiver transmitter (UART) with RS-232 transceiver. The EV kit also includes Windows® 2000/XP/Vista®-compatible software that provides a simple graphical user interface (GUI) for exercising the features of the MAX3111E.
The MAX3111E uses the SPI/MICROWIRE interface for communication with the on-board MAXQ2000 microcontroller (µC). The on-board DIP and momentary pushbutton switches are used to configure the MAX3111E internal registers.
The EV kit can be connected to a PC serial port directly or through a straight-through extension cable. The PC is a data terminal equipment (DTE) device, and the EV kit is a data communications equipment (DCE) device.
After the EV kit and the PC serial port are configured properly, the PC sends characters to the MAX3111E. The on-board µC reads the received data from the MAX3111E and displays the characters on the on-board 7-segment LED or sends back data to the PC.
Other switches, jumpers, and pads are provided to modify the board to the numerous configurations available for the MAX3111E. Figure 1, in the full data sheet, shows a simple block diagram of the EV kit (RS-232 only).