In 8051 9 bit uart mode is used when communicating with multiple devices what is the provision for the same in lpc2148
"It is easy for anyone to say Please read the manual. Even smart idiots."
But the fact is that the UART chapter doesn't have many pages.
If you had read it, you would have been able to make posts here that would have related to your findings about the processor. So it would have been possible to move on about this discussion. But too many people have two different metrics for valuing time. One metric for own time. Another metric for all the other people on this forum.
People who make posts with the inherent message "I'm lazy" do always get worse answers than people who have spent a bit of time actually trying to figure out their problems.
10 minutes with the user manual of the processor and you would have been able to make posts about no 9th bit setting found for the UART.
The important thing here is that if the processor has - or doesn't have - special support for that 9th bit, you can still not program any code without spending time with the UART chapter of the processor. It's the master reference that _must_ be read.