Answers Database
XPLA Architecture: Which CoolRunner products are pin compatible with Altera products?
Record #7594
Product Family: Hardware
Product Line: R5000
Product Part: R5064
Problem Title:
XPLA Architecture: Which CoolRunner products are pin compatible with Altera products?
Problem Description:
Urgency: Hot
General Description: What CoolRunner products are pin compatible
with Altera products?
Solution 1:
The CoolRunner 32, 64 and 128 macrocell devices are pin compatible
with Altera products. In addition, there is an automated Altera to
CoolRunner conversion utility as shown in (Xilinx Solution 7522).
There is one exception. The 64 macrocell device in the
100 TQFP (VQ100) package is not quite pin compatible with the
EPM7000 series Altera product in this package. The CoolRunner
device pins 1 & 2 are connected to I/Os A6 and A7 whereas the
same pins in the Altera device are no-connects. Conversely, the
CoolRunner device pins 99 & 100 are no-connects whereas the same
pins in the Altera device are connected to I/Os A11 and A12. These
pins are true NCs for both the CoolRunner CPLDs and the Altera parts.
To work with this issue, simply route a signal trace on the board to
connect pins 1 & 99 and another signal trace to connect pins 2 &
100. This will allow the use of either device on the board.
Another solution would be to use jumpers on the board to provide
pin-for-pin compatibility.
Even though we are pin compatible with Altera, our architecture
and design implementation is quite different. Our devices give 25% more
logic per macrocell and use 1/1000th of the power consumption at
standby and anywhere from 1/1000th to 1/3rd the dynamic power
compared to Altera. More data on our CoolRunner CPLDs can be
obtained from our website. http://www.xilinx.com/products/coolpld.htm.
End of Record #7594 - Last Modified: 01/03/00 12:00 |
