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pex8311 + fpga
a pciexpress->Localbus Bridge
low local bus efficiency I got.
why?
when transfer data beteween pex8311 and local device(fpga),I sent ready signal to pex8311 ,but pex8311 abort the transfer after transfer about 100 words,and wait for times the time,it will transfer continue...
XAPP333 - CoolRunner XPLA3 I2C Bus Controller Implementation
This document details the VHDL implementation of an I2C controller in a Xilinx CoolRunner XPLA3 256 macrocell CPLD. CoolRunner CPLDs are the lowest power CPLDs available, making this the perfect target device for an I2C controller...
Xilinx ISE 8.1
"Using ISE 8.1i software, designers can boost performance by an average of 10 to 37 percent as compared to previous ISE releases and up to 70 percent over competing solutions using Virtex-4 FPGAs."
hoho,the same as any other versions.
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