128 bit master to 32 bit slave

[Altera_Forum]

Hi , 

I am connecting a master whose data width is 128 bit. I am connecting it to a slave whose data width is 32 bit.   Master output is Avalon interface  When I trigger a data from the master, it is triggering 4 writes on slave.(32*4 =128).But that will overwrite the data in the next address. How do I tell my interconnect to consider only LSB 32 bit? Is there any setting that can be modified?

[Altera_Forum]

You can use the byteenable signal thats part of the Avalon standard to mask certain bytes.

[Altera_Forum]

--- Quote Start ---  You can use the byteenable signal thats part of the Avalon standard to mask certain bytes.  --- Quote End ---    My master is a pcie hard IP configured as G3x4 128bit 250 MHz. You mean I have to manually hack the interconnect file generated by Qsys between the pcie(rxm port) and my apb slave??

[Altera_Forum]

Try doing a write of 4 bytes rather than 16.