CHAPTER 14 SERIAL INTERFACE UART6
Preliminary User’s Manual U16315EJ1V0UD
310
(5) Transfer rate during continuous transmission
When data is continuously transmitted, the transfer rate from a stop bit to the next start bit is extended by two
clocks from the normal value. However, the result of transfer is not affected because the timing is initialized on
the reception side when the start bit is detected.
Figure 14-24. Transfer Rate During Continuous Transmission
Start bit
Bit 0
Bit 1
Bit 7
Parity bit
Stop bit
FL
1 data frame
FL
FL
FL
FL
FL
FL
FLstp
Start bit of
second byte
Start bit
Bit 0
Where the 1-bit data length is FL, the stop bit length is FLstp, and base clock frequency is f
XCLK
, the following
expression is satisfied.
FLstp = FL + 2/f
XCLK
Therefore, the transfer rate during continuous transmission is:
Transfer rate = 11
×
FL + 2/f
XCLK