Fast Models Reference Manual - ARM Information Center

Peripheral and Interface Components
5.4.11 PL050_KMI_component
The PL050_KMI component is a programmer's view model of the PL050 Keyboard/Mouse
Interface PrimeCell as described in the ARM PrimeCell PS2 Keyboard/Mouse Interface
(PL050) Technical Reference Manual.
The component is designed to communicate with models of PS/2-like devices such as a
PS2Keyboard or PS2Mouse.
Figure 5-30 shows a view of the component in System Canvas.
This component is written in LISA+.
Figure 5-30 Keyboard/Mouse controller in System Canvas
Ports
Table 5-46 provides a brief description of the ports. See the ARM PrimeCell PS2
Keyboard/Mouse Interface (PL050) Technical Reference Manual.
Name Port protocol Type Description
Table 5-46 PL050_KMI ports
pvbus PVBus Slave Slave port for connection to PV bus
master/decoder.
intr Signal Master Master port signalling completion of
transmit or receive.
clock ClockSignal Slave Clock input, typically 1MHz, which sets
the master transmit/receive rate.
ps2device PS2Data Slave Used to communicate with a PS/2-like
device.
PS2Data
The PL050_KMI component has one additional protocol.
The PS2Data protocol is used for communication between the KMI and a PS/2-like device. For
efficiency reasons the interface is implemented as a parallel byte interface rather than a serial
clock/data interface. The behaviors are:
setClockData(enum ps2clockdata) : void
Used by the KMI to simulate forcing the state of the data/clock lines. to indicate
whether it is able to receive data, wants to send a command, or is inhibiting
communication.
getData() : uint8
Used by the PS/2 device to get command data from the KMI.
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