SERIAL I/O
11.4 Clock asynchronous serial I/O (UART) mode
11.4.5 Method of reception
Figure 11.4.10 shows an initial setting example for relevant registers when receiving. Reception is started
when all of the following conditions (✕ and ✕) have been satisfied:
✕ Reception is enabled (receive enable bit = “1”).
✕ The start bit (its falling edge) is detected.
By connecting the RTS
i
pin (receiver side) and CTS pin (transmitter side), the timing of transmission and
i
that of reception can be matched. For details, refer to section “11.4.6 Receive operation.”
When using interrupts, it is necessary to set the relevant registers to enable interrupts. For details, refer
to “CHAPTER 6. INTERRUPTS.”
Figure 11.4.11 shows processing after reception is completed.
7905 Group User’s Manual Rev.1.0
11-48
RENESAS [ RENESAS TECHNOLOGY CORP ]
