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???
12/22/04 07:32
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#83608 - UART speed
Responding to: ???'s previous message
hi,


But how such a HI data rate can be generated? UART available on controllers cannot support these rates.


There are some derivatives with BRG (baud rate generator) implemented. For example, Atmel AT89C51RD2 allows to obtain about 1,5Mbps with 24MHz crystal using BRG for UART modes 1 and 3.
As about 15Mbps so look at some SiLabs parts which have second UART (UART1) with Enhanced Baud Rate Generator. Due datasheets it may produce speed upto SYSCLK/2.

Regards,
Oleg

List of 27 messages in thread
TopicAuthorDate
Control system            01/01/70 00:00      
   buses for industrial            01/01/70 00:00      
      CAN or RS-485            01/01/70 00:00      
         one way of master slave            01/01/70 00:00      
         RS485            01/01/70 00:00      
   Control system            01/01/70 00:00      
   Modbus            01/01/70 00:00      
      modbus or not            01/01/70 00:00      
   rs-485            01/01/70 00:00      
      Rs485 vs CAN            01/01/70 00:00      
      CAN            01/01/70 00:00      
         rs-485,high speed?            01/01/70 00:00      
            UART speed            01/01/70 00:00      
            Speed            01/01/70 00:00      
               Go Speed Racer!            01/01/70 00:00      
                  comments on speed and the above            01/01/70 00:00      
                     Daisy chain            01/01/70 00:00      
                        Daisy,Daisy.....            01/01/70 00:00      
                        no repeat            01/01/70 00:00      
                           Modbus            01/01/70 00:00      
                              Modbus            01/01/70 00:00      
                                 Hub ?            01/01/70 00:00      
   Modbus            01/01/70 00:00      
      Modbus            01/01/70 00:00      
         More modbus            01/01/70 00:00      
            Modbus            01/01/70 00:00      
               failed links            01/01/70 00:00      

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