Lattice Semiconductor ispClock5400D User Manual page 19

Lattice Semiconductor
5. Specify REF Frequency: 100 then click the Internal Feedback, Modify... button.
The External Feedback Setting dialog appears.
6. Select Internal Feedback, select Feedback taken from V-Divider 8, and click OK.
7. From the PLL Core Settings dialog, click OK.
8. From the Edit Symbol dialog, select USER PINS and click the Edit... button.
The USER Pin Function Allocation dialog appears.
9. Select PLL_BYPASS = PLL then click the OK button.
The USER Pin Summary dialog appears. Click the OK button.
10. From the Edit Symbol dialog select Output BANK_0 then click the Edit... button.
The Output Settings for BANK_0 & Bank_1 dialog appears.
11. Click the Source, Modify... button.
The Output Pair Source Setting dialog box appears.
12. For BANK_0, choose V-Divider-8, choose, From V-Divider, and click the OK button.
From the Output Settings for BANK_0 & BANK_1 dialog, select the following options for BANK_0:
Output Type: LVPECL
Output Enable: Always Enabled
Select the following option for BANK_1:
Output Enable: Always Disabled
Click the OK button.
13. From the Edit Symbol dialog select Output BANK_2 then click the Edit... button.
The Output Settings for BANK_2 & Bank_3 dialog appears.
14. From the Output Settings for BANK_2 & BANK_3 dialog, select the following options for BANK_2:
Output Enable: Always Disabled
Select the following option for BANK_3:
Output Enable: Always Disabled
Click the OK button.
15. From the Edit Symbol dialog select Output BANK_4 then click the Edit... button.
The Output Settings for BANK_4 & Bank_5 dialog appears.
16. From the Output Settings for BANK_4 & BANK_5 dialog, select the following options for BANK_4:
Output Enable: Always Disabled
Select the following option for BANK_5:
Output Enable: Always Disabled
Click the OK button.
17. From the Edit Symbol dialog, click Close.
18. Click the Download icon on the top toolbar.
The Frequency Summary dialog appears and reports the Reference and VCO frequency settings.
19. Click OK.
PAC-Designer reprograms the evaluation board with the updated JEDEC programming file.
ispClock5400D Evaluation Board
19
User's Guide