Analog Devices EVAL-AD5677RSDZ User Manual page 5

EVAL-AD5677RSDZ
FUNCTIONAL BLOCK DIAGRAM AND DESCRIPTION
The EVAL-AD5677RSDZ software is organized to appear
similar to the functional block diagram shown in the AD5673R/
AD5677R data sheet, which simplifies correlating the functions
on the EVAL-AD5677RSDZ with the description in the
AD5673R/AD5677R data sheet.
Table 4. Block Diagram Functions (See Figure 4)
Label Button/Function Name
A CONFIGURATION
wizard
B LDAC and RESET (GPIO
buttons)
C Select a Command
D Input Register 0
through Input
Register 15
E DAC Register 0 through
DAC Register 15
F Software RESET
G Load DAC
H DAC
User Guide
Figure 4. AD5677R
Function
Used to set the initial configuration for the board. Select the reference gain case from the Output Gain
dropdown menu. A gain of 1 is the default. After setting up the initial configuration, click Apply to
apply the values. These settings can be modified at any stage while evaluating the board.
Act as external GPIO pulses to the LDAC pin and RESET pin. The LDAC button pushes data from both
input registers (Label D) to the DAC registers (Label E). The RESET button clears all data from input
registers and DAC registers. These buttons are live and there is no need to click Apply Changes (Label J).
Command option dropdown menu selects how the data being transferred to the device affects the
input registers and DAC registers. After a data value is entered in an input register (Label D), this menu
determines if the data is transferred to the input register only, or to the channel input register (Label D)
and the channel DAC register (Label E).
16-bit data word to be transferred to the device. Click Apply Changes (Label J) to transfer this 16-bit
data word to the device.
Displays the value that is currently present in the DAC register on the device. Update the DAC registers
by selecting the appropriate command option or by toggling LDAC (Label B). DAC Register contents
may vary depending on the device, refer to the
Returns the evaluation board and software to default values. This button is live. Therefore, there is no
need to click Apply Changes.
Users can individually control which channel loads the values from the input registers to the DAC register.
DAC configuration options provide access to individual channel configuration options such as power-
down options and hardware LDAC mask enable and disable settings.
For a full description of each block, register, and the corresponding
settings, see the
Some of the blocks and their functions are described in this
section as they pertain to the evaluation board. The full screen
block diagram is shown in Figure 4. Table 4 describes the
functionality of each block.
Block Diagram with Labels
AD5673R/AD5677R
Rev. 0 | Page 5 of 13
AD5673R/AD5677R data sheet.
data sheet.
UG-1766