Datasheet

78K0/Ix2 CHAPTER 14 SERIAL INTERFACE UART6/DALI
R01UH0010EJ0500 Rev.5.00 473
Feb 28, 2012
(5) Data frame length during continuous transmission
When data is continuously transmitted, the data frame length from a stop bit to the next start bit is extended by two
clocks of base clock from the normal value. However, the result of communication is not affected because the timing
is initialized on the reception side when the start bit is detected.
Figure 14-36. Data Frame Length During Continuous Transmission
Start bit
Bit 0 Bit 1 Bit 7
Parity bit Stop bit
FL
1 data frame
FL FL FL FL FLFLFLstp
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
XCLK6, the following
expression is satisfied.
FLstp = FL + 2/f
XCLK6
Therefore, the data frame length during continuous transmission is:
Data frame length = 11  FL + 2/f
XCLK6