User Guide
EVAL-ADMV8526
EVALUATION BOARD SOFTWARE
analog.com
Rev. 0 | 6 of 17
PLUG-IN DETAILS
The full screen
ADMV8526
chip plug-in with labels is shown in
Figure 7
. The labels correspond to items listed in
Table 1
, which
describes the functionality of each section. For additional detailed
programming, refer to the ADMV8526 data sheet.
Figure 7. ADMV8526 Chip Plug-In with Labels
Table 1. ADMV8526 Chip Plug-In Label Functions (See
Figure 7
)
Label
Function
A
Use the
CONFIGURATION
section to initialize the ADMV8526-EVALZ.
Load Settings from CSV:
click the
…
button to select which .csv file to load into the
CONFIGURATION
section.
Check to Load Settings:
once a file is selected, select this check box to load the .csv file contents into the
CONFIGURATION
section. Note that a check mark
does not appear when the check box is selected.
Filter Configuration:
select the configuration settings for enabling or disabling the interpolation function.
WR Grouping:
select the write (WR) grouping settings for SPI write mode.
SFL Settings:
select the SPI fast latch (SFL) settings that are used when the chip is placed into the SPI fast latch mode.
Lookup Table 0 to 15:
define the configuration for lookup table (LUT)0 to LUT15.
Lookup Table 16 to 31:
define the configuration for LUT16 to LUT31.
Coefficients:
define the interpolation coefficients.
Summary:
click this button to review the settings for the initial setup.
Apply
: click this button to apply the settings to the chip. Note that clicking
Apply Changes
(J1) does not update the changes in this section. In addition, at
startup, the main diagram user controls cannot be updated until the
Apply
button is clicked at least once.
Restore Software Defaults:
click this button to zero out the
CONFIGURATION
section before loading a different .csv file.
B
Use the
SFL Settings
section to configure the SPI fast latch settings on the chip when in the SFL mode. Refer to the ADMV8526 data sheet for more
information regarding the internal state machine and SFL mode functionality. This section includes the following:
FAST_LATCH_STATE:
this value is the next state of the internal state machine pointer (read only).
FAST_LATCH_START:
this value determines the start location within the internal state machine.
FAST_LATCH_STOP:
this value determines the stop location within the internal state machine.
FAST_LATCH_DIRECTION:
this bit determines the direction that the internal state machine advances for each rising edge of the CS pin when in SFL mode.
C
The
Status
section includes the following:
Mode:
when the SFL pin is low, the mode is
SPI Write
. When the SFL pin is high, the mode is
SPI Fast Latch
, and the chip uses the LUT.
CSB_AUX Count:
when in SFL mode, this field displays the number of times the
SDP-S
logic pin, CSB_AUX, was toggled.
Message:
upon entering SFL mode, the
Message
field displays
Waiting for CSB
. Once the CSB_AUX pin is toggled, the
Message
field displays the current
LUT number followed by the next LUT number.
