zia.newversion
Member level 5
Hi there...
I have to use a hardware buffer in an embedded application... The buffer must be FIFO and >64kB...
The data comes on a serial link at TTL level. Obviously, the buffer must store the data byte-by-byte and the on-board data handler then picks it up from the buffer on FIFO basis. It's worth mentioning that a software buffer is not feasible in this system. The buffer must be OUT of the main processor.
So, I was thinking maybe I can implement a buffer by using another smaller, cheaper, microcontroller with a shared memory... The controller would receive data just as in RS232 line and then upload it to the shared memory chip, from where the on-board data handler (the main processor) can download bytes as needed. But that looks like a cheap technique, and of course increases cost, although not by much.
However, the actual question that I want to ask is, are there some hardware buffers as in IC's with all that I want to implement through uC hardcoded into them, so they would serve the purpose of a FIFO buffer? Something like multiple (more than 64k 8-bit) shift registers or something like that? I'm sure there must be something like that. Please discuss. Thank you.
I have to use a hardware buffer in an embedded application... The buffer must be FIFO and >64kB...
The data comes on a serial link at TTL level. Obviously, the buffer must store the data byte-by-byte and the on-board data handler then picks it up from the buffer on FIFO basis. It's worth mentioning that a software buffer is not feasible in this system. The buffer must be OUT of the main processor.
So, I was thinking maybe I can implement a buffer by using another smaller, cheaper, microcontroller with a shared memory... The controller would receive data just as in RS232 line and then upload it to the shared memory chip, from where the on-board data handler (the main processor) can download bytes as needed. But that looks like a cheap technique, and of course increases cost, although not by much.
However, the actual question that I want to ask is, are there some hardware buffers as in IC's with all that I want to implement through uC hardcoded into them, so they would serve the purpose of a FIFO buffer? Something like multiple (more than 64k 8-bit) shift registers or something like that? I'm sure there must be something like that. Please discuss. Thank you.
