Clock frequency and baud rate

1. Is baud rate the same as clock frequency?
2. How is baud rate related to frequency?
3. What is the clock frequency of UART?

Is baud rate the same as clock frequency?

Yes, in most cases the Tx clock frequency will be the same as the Baud rate. ErnieM said: Baud rate is the symbol rate and is (1 start + 8 data + 1 parity + 1 stop = 11 bits) 1/11th of the bit rate for that case.

How is baud rate related to frequency?

The baud rate is the number of times per second a serial communication signal changes states; a state being either a voltage level, a frequency, or a frequency phase angle. If the signal changes once for each data bit, then one bps is equal to one baud.

What is the clock frequency of UART?

UART clock allows integer division to common baud rates up to 1,800(x16x294) or 7,200(x8x147). Frequencies also used are 11.2896 MHz, 16.9344 MHz, 22.5972 MHz, 33.8688 MHz and 45.1584 MHz. Used in CD-DA systems and CD-ROM drives; allows integer division to 44.1 kHz (196×44.1 kHz), 22.05 kHz, and 11.025 kHz.