This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

SN65HVD1786: TIDUEI9 Manchester encoding

Part Number: SN65HVD1786
Other Parts Discussed in Thread: THVD8000, THVD8010

Hi Hao,

we are going through the TIDUEI9 reference design and also THVD8000, and the max data rate is 1Mbps and we would like to have data rate between 10Mbps and 20Mbps.

In TIDUEI9, is stated that the RS485 transceiver can go up to 50Mbps ( 10m) . (Figure 9 ).

We have a MCU that can output on UART 20Mboud ( 20Mbps), please can you suggest a RS485 transceiver from TI that can support this speed and we can couple power to it as in the TIDUEI9 design?

Power: 48V (5A)

Also we want to use Manchester encoding, but if possible outside the MCU. On page 11 it says following:

"

Manchester encoding can be performed in software and transmitted through a serial port on a
microcontroller. One downside of this approach is the additional memory and CPU cycles required to
generate two bits for every bit in the original data. Also, to keep the original data rate, the serial port
transmitting clock frequency has to be doubled. If there is an upper limit to the serial port transmit clock
frequency, the data rate will must be reduced. These limitations can be avoided by implementing the
encoding and decoding using a logic circuit at the expense of additional BOM cost

"

Please can you tell: is possible that some RS485 transceiver can preform Manchester encoding?  Or what kind of logic circuit ic is meant in TIDUEI9 to preform the Manchester encoding ? 

Best Regards,

David.