Mode 3 of 8051 serial port

Explain what is the mode 3 of 8051 serial port?

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Within this mode, the 11 bits are transmitted (through the TXD) or received (through the RXD): a start bit (0), 8 data bits (LSB first), a programmable 9th data bit and a stop bit (1).It is similar to the mode 2 except baud rate. The baud rate in the mode 3 is variable.

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