Answers Database
4000E/X Configuration: In master mode, how many CCLKs are given after DONE goes high?
Record #7819
Product Family: Hardware
Product Line: 4000XL
Product Part: 4000XL
Problem Title:
4000E/X Configuration: In master mode, how many CCLKs are given after DONE goes high?
Problem Description:
Urgency: Standard
General Description: How many CCLKs will a 4kX part in master mode give after DONE goes high?
Solution 1:
The 4kX part will give 1 more rising edge if the Sync-To-Done capability is selected in the Bitgen o
ptions. If Sync-To-Done is not selected, the number of CCLKs given after DONE goes high is determin
ed by the number of Startup Cycles left after DONE goes high. The Defaults are:
DONE: C1
OutputsActive: C3
GSRInactive: C4
so 3 rising edges (C2, C3, and C4) will be given after DONE goes high.
Even if other cycles are chosen for OutputsActive and GSRInactive, the number of cycles given will t
ake the sequence through C4.
If DONE is selected to go high on C4, there will be no further rising edges after DONE goes high.
End of Record #7819 - Last Modified: 10/13/99 15:58 |
