Software Description
16
SNLU238A – August 2018 – Revised September 2019
Copyright © 2018–2019, Texas Instruments Incorporated
DS250DF230EVM User’s Guide
•
To configure a channel via “Manual Mode”:
–
Select the desired channel on Channel Select pull-down.
–
Select “Manual Mode” option on the page; the user will then see the manual mode input fields
become adjustable.
–
Select the desired divider setting from the “Divider Configuration” pull-down.
•
Select “divide-by-1” when data rate > 13 Gbps.
•
Select “divide-by-2” when 13 Gbps
≥
data rate > 6.5 Gbps.
•
Select “divide-by-4” for data rate
≤
6.5 Gbps.
–
Enter desired Data Rate for group 0 then click “Write Rate Regs”. The GUI defaults to max PPM
tolerance.
–
Enter desired Data Rate for for group 1 then click “Write Rate Regs”. The GUI defaults to max PPM
tolerance.
–
Click “Reset CDR”.
Figure 15. CDR Tab, Standard Mode Selected