NEC 78K0 Series User Manual page 371

Figure 15-17 shows the timing of starting continuous transmission, and Figure 15-18 shows the timing of
ending continuous transmission.
Figure 15-17. Timing of Starting Continuous Transmission
T D6
X
INTST6
TXB6 FF
TXS6 FF
TXBF6
Note
TXSF6
Note When ASIF6 is read, there is a period in which TXBF6 and TXSF6 = 1, 1. Therefore, judge whether
writing is enabled using only the TXBF6 bit.
Remark T D6: T D6 pin (output)
X X
INTST6: Interrupt request signal
TXB6: Transmit buffer register 6
TXS6: Transmit shift register 6
ASIF6: Asynchronous serial interface transmission status register 6
TXBF6: Bit 1 of ASIF6
TXSF6: Bit 0 of ASIF6
CHAPTER 15 SERIAL INTERFACE UART6
Start Data (1) Parity
Data (1) Data (2)
Data (1)
Preliminary User's Manual U17260EJ3V1UD
Stop Start Data (2)
Data (3)
Data (2)
Parity Stop Start
Data (3)
371