Aug 28, 2006 #1 A addn Member level 1 Joined Apr 8, 2006 Messages 35 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,482 Hi,everybody what does UART 16550 FIFO structure use?? synchronous or asynchronous thanks
Aug 28, 2006 #2 N Nimer Full Member level 3 Joined Apr 26, 2005 Messages 178 Helped 26 Reputation 52 Reaction score 8 Trophy points 1,298 Location PALISTINE Activity points 2,907 hi i dont understand the question .. from what i know the fifo structre is synch . but you conrol the synch signals ...see the data sheet for the right answer . regards
hi i dont understand the question .. from what i know the fifo structre is synch . but you conrol the synch signals ...see the data sheet for the right answer . regards
Aug 29, 2006 #3 P pahol Junior Member level 2 Joined Jun 20, 2003 Messages 20 Helped 1 Reputation 2 Reaction score 0 Trophy points 1,281 Activity points 133 Please give more information in your question. UART is async, most of FIFO is sync.
Aug 29, 2006 #4 A addn Member level 1 Joined Apr 8, 2006 Messages 35 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,286 Activity points 1,482 hi, about asyn and syn FIFO,please refer to following link h**p://direct.xilinx.com/bvdocs/appnotes/xapp051.pdf my question is that according to 16550 datasheet the parameter of RC(read cycle) and WC(write cycle) are 280 ns if 16550 use 1.8432 M Hz as system clock and syn FIFO then we can find out that the syn FIFO's speed can't to match RC and WC
hi, about asyn and syn FIFO,please refer to following link h**p://direct.xilinx.com/bvdocs/appnotes/xapp051.pdf my question is that according to 16550 datasheet the parameter of RC(read cycle) and WC(write cycle) are 280 ns if 16550 use 1.8432 M Hz as system clock and syn FIFO then we can find out that the syn FIFO's speed can't to match RC and WC
Aug 31, 2006 #5 S sheik_vb Member level 3 Joined Jul 21, 2006 Messages 58 Helped 3 Reputation 6 Reaction score 0 Trophy points 1,286 Activity points 1,510 Hi, u can use the sync fifo, but u need double-buffer the signal.