Answers Database
Spartan: What library components in the 4000E library are not supported by spartan devices
Record #3592
Product Family: Hardware
Product Line: Spartan
Product Part: S40
Problem Title:
Spartan: What library components in the 4000E library are not supported by spartan devices
Problem Description:
Urgency: Standard
General Description: When designing into a Spartan part, 4000E library
is used as the design library. What 4000E library components can not be used in Spartan.
Solution 1:
These components must be avoided when targeting Spartan
even though they are technically available in the 4000E library.
1) Asynchronous RAM
Do not use the following components:
RAM16x1, RAM32x1, and other available depths
The following components may be used because they are synchronous:
RAM16x1S, RAM32x1S, RAM16x1D, ROM16x1, and other available depths
Also, do not use LogiBLOX to create asynchronous RAM components
2) Edge Decoders
Do not use the following components:
DECODE4, DECODE8, DECODE16
3) Wired-AND
Do not use the following components:
WAND1, WAND4, WAND8, WAND16, WOR2AND
4) Mode Pins as Usable I/O
Do not use the following components:
MD0, MD1, MD2
End of Record #3592 - Last Modified: 04/16/98 19:52 |
