AN1656 APPLICATION NOTE

2/6

Once installed, the control software will appear as shown in fig.1, here below is explained how to work with

it.

STEP 1:

Clicking on the "parallel port" icon it will appear the following image.

Figure 2.

The program automatically detects the printer ports installed in the system and enables them. Select the

port connected to the device evaluation board through the appropriate interface. To verify if the device is

working, press the button with the binocular.

The program scans all possible device address and stops when it receives the acknowledge. To restore

default device address press the button with the default value.

The clock frequency slider allows the user to vary the communication speed.

Three buttons set the bus operating mode:

– ACK detection. It toggles ACK detection ON/OFF. If the ack detection is ON and the device is not

acknowledging the commands, the button is RED, signaling that ack error occurred on last command.

Incremental mode. It toggles incremental bus ON/OFF .When incremental bus is active all the pre-

set commands are sent by using incremental bus mode (i.e. the message is made by the first sub-

address and then all the data bytes follow. The device automatically increments the destination ad-

dress internally). The Send button acts as well

– Block mode. It toggles block mode ON/OFF . When block mode is ON , any variation in Volume is

not sent to the device in real time. Commands are sent all together either when user click on Send

command or block mode is turned to OFF.

STEP 2:

Push the Button 0 in order to Load the default reset condition.

It is possible now to Increment /Decrement the Volume attenuation acting on the Sliders

command or pushing the buttons that allow to attenuate by one step.

It is possible to save 4 settings for the Volume pressing the Buttons [1…4] + SHIFT.