The LPC2378 manual says that in the external memory controller you can enable/disable the read and write buffers.
However, the actual register bit descriptions only talk abou the write buffer and there does not seem to be a way of disabling the read buffer.
If you want to put a peripheral chip on that bus, then a read buffer is a rather unwanted thing (you do not want to cache registers of a peripheral chip).
I asked NXP support about it, but they don’t seem to reply. Maybe someone here knows for sure if it is possible to disable the read buffer of the EMC or not.
Thanks.