4

EVDP610

3.1.1 Reset IXDP610

This toggle button will reset the EVDP610 board and the

GUI back into their initial states. If the EVDP610

board’s power has been cycled this button can be used

to reset the GUI software. If for any reason the hardware

and software disagree this button can be used to

reinitialize the hardware and the software into the same

state (the user will lose the current settings of the

board).

3.1.2 Read IXDP610 Status

This toggle button will read the status of the EVDP610

board. It will update the GUI to the current Pulse Set-

tings, Dead Time Settings, Lock Settings, and Output

Settings. If for any reason the hardware and software

disagree this button can be used to read what the

hardware is doing and update the software.

3.1.3 Lock

This button will “lock” the control register of the IXDP610,

which will not allow the dead-time period, clock divide,

resolution or the stop bit to be changed. Hitting this

button again, or hitting the RESET IXDP610 button will

unlock the IXDP610.

3.1.4 Serial Settings

These buttons control the baud rate and the COM port

selection (1 – 4). *Note: Baud rate is not variable and

will remain dimmed.

3.1.5 Clock Settings

The CLOCK DIVIDE button will cause the input clock of

the IXDP610 chip to be internally divided by 1 or by 2.

The clock select button allows the microprocessor to

control the input clock to the IXDP610, which can then

be variably changed by the GUI. The output frequency

ring allows the user to select the frequency of the output

of the IXDP610 from 1 – 50 Hz. When the clock is

selected the GUI will prompt the user to make sure of

the correct jumper settings.

3.1.6 Pulse Settings

The Resolution toggle button allows the user to switch

between seven-bit and eight-bit resolution on the

EVDP610 board. The pulse width can be written to the

IXDP610 by either the Duty Cycle or Pulse Width. One

of these must be selected by the toggle switch. When

Duty Cycle is selected and the user has entered a

number into the Duty Cycle textbox the pulse width

textbox will be updated with the actual number written

into the pulse width latch of the IXDP610. Duty Cycle

and Pulse Width are always calculated with respect to

resolution, meaning if the value entered into Duty Cycle

was 50%, in 7-bit mode the pulse width number will be

64 where as in 8-bit resolution the pulse width number

will be 128. The pulse width text box will display the

actual number written to the pulse width latch, whereas

the duty cycle is calculated based on the entered

values. Be aware that if you were to enter 128 in the

pulse width textbox, in 8-bit resolution, the output duty

cycle will be 50%. If the IXDP610 is switched into 7-bit

resolution the pulse width number will remain the same,

yet the duty cycle now becomes 100% and the GUI and

the hardware will be updated with these values.

When the Read Pulse Settings button is pressed the

evaluation board updates all pulse settings in the area.

3.1.7 Dead Time

Dead Time can either be entered manually or with the

arrow buttons to the side of the test box. The Read

Dead Time button updates the GUI from the evaluation

board. For a detailed discussion on dead time please

see section 2.2.1 or the IXDP610 specification.

3.1.8 Outputs Enable

The Outputs Enable button allows the user to turn on/off

the outputs of the IXDP610. This button asserts the stop

bit in the control latch of the IXDP610. When the out-

puts are enabled the status LED located directly above

the button will light. The LED will turn off when the

Figure 6: The EVDP610 GUI GUI

up to 390KHz (in 7-bit resolution). The external clock can

be installed into the via on the board labeled TP3.

3.0 GUI GENERAL DESCRIPTION AND USE

3.1 The GUI

After installing and starting up the GUI, figure 7 is the first

screen that should appear. The Message box should

read: “Welcome to the IXDP610 Test Environment” as

seen in Figure 6. Be aware that when the GUI has

established communication with the evaluation board, the

GUI will reset the EVDP610 hardware to ensure that both

the software and the hardware are in the same state.