Ads62Pxx Frequently Used Registers - Texas Instruments ADS62P EVM Series User Manual

TI ADC SPI Control Interface
3.3.1 SPI Register Writes
The most basic mode of operation allows full control of writing to individual register addresses. From the
tabs at the top of the interface screen
Bytes(s) in hexadecimal (hex) and Data Byte(s) in hex, which can be found in the device data sheet.
When you are ready to send this command to the ADC, either press "Enter" on your keyboard or press the
Send Data button. The graph indicator is updated with the patterns sent to the ADC. The default inputs to
both the Address Byte(s) and Data Byte(s) fields are hex inputs as designated by the small x in the
control. Users can change the default input style by clicking on the "x" to binary, decimal, octal, or hex.
Multiple register writes can be written simply by changing the contents of the Address Byte(s) and Data
Byte(s) field and pressing "Enter" or Send Data again. The ADC SPI History window will keep track of the
register writes performed in a session.
3.3.2 SPI Register Write Using a Script File
After the ADC is configured to the desired usage, users can save time in future ADC configurations by
saving a script file. By pressing the Save Script button, it dumps ADC SPI History window contents into a
text file. Alternatively, users can edit the script file in a text editor. An example script file is located in the
\\Install Directory\Script Files\ADS62PXX_LVDS_oBinary.txt which configures the ADC for use with the
TSW1200. When ready to write the contents of the script file to the ADC, users can press the Load Script
button and they will be prompted for the file location of their script file. The commands are sent to the ADC
when the user acknowledges the selection of the file, however the graph indicator does not show multiple
writes. The ADC SPI History will update to show the register writes executed in the script file.
3.3.2.1

ADS62PXX Frequently Used Registers

For ease of use, several buttons have been added that allow one-click register writes of commonly used
features found in Table
ADS62PX5/X4/X3/X2,one tab for ADS62Px9/X8 and one tab for ADS62C15/17, because these
commands are specific to the ADS62PXX ADC only. The software writes to the ADC both the contents of
the associated address and data when the button is clicked. When the ADS62PXX Reset button is
pressed, it issues a software reset to the ADC, and it resets the button values to match the contents inside
of the ADC. The graph indicator plots the SPI commands written to the ADC when a button has been
pressed.
Default Value
ADS62PXX Reset
Over-ride bit: Off
2s Complement
CMOS
Powerdown: OFF
No Course Gain
INT Reference
Bit-Wise (LVDS Only)
Test Mode: None
Fine Gain
20 ADS62PXXEVM
(Figure 8), select the ADS62PXX ADC. Next, type the Address
8. These are found in the ADS62PXX tab (note that there is one tab for
Table 8. ADS62PXX Frequently Used Registers
Over-ride bit: On
Straight Binary
DDR LVDS
Multiple Powerdown Options
3.5-dB Course Gain
EXT Reference
Byte-Wise
Multiple Options
Multiple Options
Alternate Value
SLAU237A – May 2008 – Revised April 2009
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