Integrator/CP User Guide - ARM Information Center

Peripherals and Interfaces4.7 Keyboard and mouse interfaceThe Keyboard and Mouse Interfaces (KMI) are described in:• About the KMI interface• KMI functional overview on page 4-34• KMI interrupts on page 4-34• KMI registers on page 4-35.4.7.1 About the KMI interfaceThe keyboard and mouse controllers are implemented with two PrimeCell KMIs thatare incorporated into the system controller FPGA. This is shown in Figure 4-17.System controller FPGAAPBKeyboardMouseMouseKeyboardFigure 4-17 KMI block diagramEach KMI contains the following functional blocks:• APB interface and register block• transmit block• receive block• controller block• timer/clock divider blocks• synchronization logic.ARM DUI 0159B Copyright © 2002 ARM Limited. All rights reserved. 4-33