EV9902A Datasheet, PDF (10/23 Pages) CML Microcircuits – Measures Bit Error Rate

Interface Kit for EV9900A
6. Detailed Description
EV9902
6.1. Software Description
The ES9902 application allows the user to interact with the EV9900A via an easy to use graphical
interface. It consists of a number of tabs: each one representing a particular set of registers or a
particular function of the CMX990. Displayed in the title bar of the program window is the serial
number of the EV9902 kit being interfaced by the software.
To select a tab simply click on the corresponding name in the row at the top of the program
window. Setting or clearing the check box associated with a bit of a register will cause that bit to
be set or cleared when the register is next written to. If the ‘Auto Write’ check box is set a register
will be written whenever a check box or list box associated with it is modified. This removes the
need to click the ‘Write’ button associated with that register. The program can be closed at any
time by clicking the ‘Close’ button or by pressing ‘Alt’ and ‘F4’ keys simultaneously.
6.1.1. The Modem Registers Tab
The Modem Registers tab gives access to the CMX990 baseband modem registers, see Figure 3.
Figure 3 – The Modem Registers Tab
The Command register task drop-down list allows the selection of the various CMX990 modem
tasks. The selection shown is dependant on the displayed value of the Mode register bit ‘Tx/Rx’,
showing either the receive mode or the transmit mode tasks. The Data Buffer register can be
either written to or read by selecting the appropriate option.
© 2009 CML Microsystems Plc
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UM9902/3