Using the Evaluation Software
The graphical user interface has a main screen with 2 tab screens which allow control and indication for
different functions of the device.
Once the evaluation board is connected to the PC, the device can be controlled via the software interface.
The LM10507 will become active as soon as the USB cable is plugged in and ‘Power UP’ is clicked.
When USB cable is plugged in, an orange led LD1 (DC IN) is illuminated. When the device starts up
correctly, a green led LD1 (PWR_OK) is lit. A red led LD2 (STANDBY) is illuminated when the LM10507
dev_sleep mode is active. All the device functions can be accessed via the control buttons.
5.1
Main Screen (Figures 2 & 3)
The Main screen has a TAB section placed so that the right hand side and lower part of screen is visible
as the background for either tab selection. Common functions can be controlled and monitored here.
5.2
Right Part of Screen
The 'Probe' frame contains results of voltage measurements using on-board ADC's. The input voltage and
device outputs are shown here when the board is powered.
The 'Pins' frame shows the status of the PWR_OK pin. It also contains checkboxes to control DEVSLEEP
and ENABLE signals.
Pressing the 'RESET_DEVICE' button causes 50 ms negative pulse in reset pin.
Pressing the ‘Power UP’ button enables the device outputs, forces the ENABLE pin to go high, and then
updates the screen according to default register values.
5.3
Lower Part of Screen
This part of the screen contains following checkboxes and buttons
‘’Poll status’’ checkbox allows continuous reading of the evaluation chip status register, the state of the I/O
pins and the voltage measurement results. The screen is updated accordingly.
‘’Auto write’’ checkbox. If this box is checked, any change to the registers will be written to the device
immediately. Otherwise the user must press 'Write regs' button to send the update to the registers. In this
way, the user can change values in several registers and update the changes in one communication burst.
"Update’’ button reads content of every register and updates the screen accordingly.
‘’Write regs’’ button. If the 'Auto write' checkbox is disabled, the user can press this button to update the
content of every register.
There is a status bar at the bottom of the screen. It shows if the connection to the evaluation board is
established, and displays information about the last register write/read operation. Register information is
given in the format: ‘’R/WXX:YY’’, where the first letter indicates operation (read or write), XX is register
address and YY is data.
5.4
System Settings Tab (Figure 2)
Selecting this tab allows access to the controls of Buck1, Buck2 and Buck3 regulators, LDO enable,
Oscillator Disable and PWR_OK pin polarity. It also shows a log of occurred events.
In System 'Status' frame, the user can observe the device output status bits. Also the user can enable
'Poll status' checkbox at lower part of screen to get continuous status updates (1 update/sec).
In 'Buck1', 'Buck2' and 'Buck3' frames the user can set the output voltage of each buck regulator, enable
the individual regulator, or force it into PWM mode. Additionally in 'Buck3', the user can set the output
voltage for normal mode and DevSleep mode.
The 'Misc' frame contains controls for Oscillator disable bit and PWR_OK pin polarity.
3
SNVU409 – May 2014
LM10507 User's Guide
Copyright © 2014, Texas Instruments Incorporated