Analog Devices AD5758, User Manual

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UG-1268 EVAL-AD5758 User Guide
Rev. 0 | Page 8 of 20
Table 4. AD5758 Block Diagram Label Functions (See Figure 8)
Label Function
A To apply any changes made to the block diagram or to register values in the memory map to the device, click Apply Changes .
B To read back all of the registers of the device, click Read All .
C Click Reset Chip to reset the AD5758 . Reset Chip has the same functionality as the software reset of the AD5758 .
D Click Diff to show the registers that are different from the data stored on the device. This function shows what changed since the
last time the registers were read.
E
Click Software Defaults to load the software defaults of the device. These values are not written to the hardware. Click Apply
Changes (Label A) to write the software default values to the hardware.
F
The AD0 and AD1 check boxes set the DUT address of the device and must correspond to JP12 and JP14 on the hardware. If
either box is checked, this represents a high state. If either box is unchecked, this represents a low state.
G If the /RESET box is checked, the SDP-S sets the RESET pin high. Otherwise, the SDP-S pulls RESET low.
H If the /LDAC box is checked, the SDP-S sets the LDAC pin high. Otherwise, the SDP-S pulls LDAC low.
I The ACE plug-in monitors the FAULT pin. If the FAULT pin is low, the /FAULT indicator LED lights up red.
K VI_OUT displays the calculated output at VI_OUT, and also displays if the output is in voltage, milliamps, or is high impedance (high-Z).
Lx GUI access on several registers. Pop-ups, drop-down menus, and hexadecimal textboxes are available in the GUI to configure
several registers of the
AD5758 . To write the changes to the device, the Apply Changes button (Label A) must be clicked. The
functions within the GUI that control various registers (Label L1 through Label L15) are described in Table 5.
M
The Calibration Memory Refresh button initiates a write to the key register to perform a calibration memory refresh.
N The SW LDAC button initiates a write to the key register to perform a software LDAC command.
O The NOP Command button initiates a write to Address 0x00 for a no operation (NOP) command.
P
The Configure ADC button writes the data selected in the ADC Config menu (Label L15) to the ADC configuration register.
Q Two Stage Readback Select menu. Two stage readback is initiated through the two stage readback select register. Clicking the
Readback button initiates a write to the two stage readback select register and then issues a no operation command.
R DIGITAL DIAGNOSTIC RESULTS menu. Clicking the Update and Readback Digital Diagnostic Result button triggers a write 1
to clear operation and a readback from the digital diagnostic result register.
S
ANALOG DIAGNOSTIC RESULTS menu. Clicking the Update and Readback Analog Diagnostic Result button triggers a write 1
to clear operation and a readback from the analog diagnostic result register.
T
If the HART_EN box is checked, the HART_EN bit = 1 in the General-Purpose Configuration 1 register.
U If the FPS EN box is checked, the FAULTPROT_SW_EN bit = 1 in the DC-to-DC Configuration 1 register.
V
Click the
Proceed to Memory Map
button to open the AD5758 memory map (see Figure 9).
W Click the Example Sequences button to open the example sequences window (see Figure 15).
Table 5. Register Controls Accessible via the GUI (See Label Lx in Table 4 and in Figure 8)
Label Function
L1
Diagnostic Configuration . Clicking this button activates the associated pop-up menu.
L2 GP Config . When this button clicked, a pop-up menu appears.
L3
Key register menu. When this menu is clicked, a drop-down menu appears.
L4 Fault Pin Config . When this button is clicked, a pop-up menu appears.
L5
WDT Config . When this button is clicked, a pop-up menu appears.
L6 Frequency Monitor menu. This menu displays the value in the frequency monitor when read.
L7
Clear Code menu. Use the textbox in this menu to insert a clear code value in hexadecimal format.
L8 User Gain menu. Use the textbox in this menu to insert a user gain value in hexadecimal format.
L9
User Offset menu. Use the textbox in this menu to insert a user offset value in hexadecimal format.
L10 DAC Input Reg menu. Use the textbox in this menu to insert the DAC value in hexadecimal format.
L11 16 Bit DAC . When this button is clicked, a pop-up menu appears .
L12 DAC Output Reg . This menu displays the hexadecimal value currently set in the DAC output register.
L13 DC-DC Converter . When this button is clicked, the dc-to-dc configuration pop-up menu appears.
L14 Status Register . This menu displays the contents of the status register.
L15 ADC Config . This menu contains a combination of drop-down menus and a textbox in which to enter the sequence data.