Optional Modes and Information
7
SLAU706A – January 2017 – Revised September 2017
Copyright © 2017, Texas Instruments Incorporated
TSW40RF8x Evaluation Module
5
Optional Modes and Information
5.1
Software Manipulation
This section includes directions for software manipulation:
5.1.1
Enter ADC NCO Adjustment
•
Select the
ADC32RFxx
tab
→
ADC32RFxx
tab
→
DDC Configuration
tab
•
Adjust NCO frequency values as desired, and press enter; this will calculate the closest NCO
numerical value
•
Place the cursor in the NCO numerical value, press the
space
bar then press the
Enter
key; this will
calculate the
exact
NCO frequency value.
5.1.2
DAC NCO Adjustment
•
Select the
DAC38RF8x
tab
→
DAC38RF8x
tab
→
Digital(DACA/B)
tab
•
Change the desired NCO value at:
NCO
→
NCO Frequency(MHz)
(for example, 1960)
•
Select
Update NCO
5.2
DAC Pattern Generation
DAC pattern generation is set up with the following:
•
Select the
DAC38RF8x
tab
→
DAC38RF8x
tab
→
Digital(DACA/B)
tab
–
Un-select
Constant input
•
Select the
DAC
tab on the HSDC Pro Software
•
Load: DAC38RF8x_LMF_841_RevD.ini
•
Change
Data Rate (SPS)
to: 491.52M
•
Change the
DAC Option
to: 2’s Compliment
•
Modify
I/Q Multitone Generator
–
Set Tone BW to: 1
–
Set # to: 1
–
Set Tone Center to: 0
–
Set the
Tone Selection
to: Complex
–
Press the
Create Tones
button
•
Press the
Send
button; click
OK
if a window pops up
•
Verify:
–
LED D2 on the TSW14J56 flashes
–
The tone output located at NCO frequency value (for example, 1960 MHz)
•
The
Reset DAC JESD Core & SYSREF TRIGGER
button in the
DAC38RF8x
tab
→
Quick Start
tab may need to be pressed
5.3
HSDC Pro ini Files
HSDC Pro ini files are discussed in this section:
5.3.1
Transceiver Mode
•
Transceiver mode allows TX and RX to operate simultaneously
•
Transceiver mode is enabled when Transceiver Mode = 1 in the ini file for both DAC and ADC ini files
•
Transceiver mode is limited to SerDes speeds of 5 Gbps or less
