AD9956/PCB

Rev. 0 | Page 8 of 12

DUT SIGNALS DIALOG BOX

This dialog box controls the reset, I/O update, and I/O reset

signals for the master and slave devices. Click the lock icon

between the corresponding Master and Slave buttons to lock the

two together. Click Master or Slave Reset, I/O Update, or I/O

Reset

, to specify the unit that issues the command to both

devices.

Figure 7. DUT Signals Dialog Box

The auto I/O update function is controlled in the Enable Auto

I/O Update

section. Select either Master–Auto I/O Update,

Slave–Auto I/O Update

, or both to send an I/O update to the

device(s) every time you click LOAD (default on). If you want a

device to wait for a manually sent I/O update signal, clear the

corresponding check box.

DUT I/O DIALOG BOX

This dialog box controls the I/O configuration for the device.

Click I/O Reset Master or I/O Reset Slave to send an I/O reset

to the corresponding serial port state machine.

Select LSB First to change the data format to LSB first. The

default is MSB first.

In the Serial I/O Mode section, select either 2 Wire or 3 Wire

from the drop-down list to specify the part as either, respectively,

a 2-wire serial port, in which the serial data line is I/O, or a

3-wire serial port, in which the serial data is input on SDI/O

and read back on SDO.

Figure 8. DUT I/O Dialog Box