VI - 33Chapter 6 8-bit TimersSerial Transfer Clock Output6-8 Serial Interface Transfer Clock Output6-8-1 OperationSerial interface transfer clock can be created by using the timer output signal.Serial InterfaceTransfer Clock Operation by 8-bit Timer (Timers 4 and 5)Timer 4 output can be used as a transfer clock source for serial interface 1. Timer 5 output can be used asa transfer clock source for serial interface 0.Timing of Serial Interface Transfer Clock (Timers 4 and 5)N00 01 N-1 NCountclockTMnENflagCompareregisterBinarycounterInterruptrequest flag00 01 00N-1 N00 01 N-1 NTimer outputSerial transferclockThe timer output is synchronized to the serial transfer clock by the timer count clock, and its fre-quency is 1/2 of the set frequency by the compare register.Other count timings are same to the timing of timer operation. For the baud rate calculation and theserial interface setup, refer to chapter 11. Serial Interface 0 and 1.Table 6-8-1 Timer for Serial Interface Transfer ClockFigure 6-8-1 Timing of Serial Interface Transfer Clock (Timers 4 and 5)Serial transfer clock Timer 4 Timer 5Serial interface 0 - √Serial interface 1 √ -Serial interface 3 - √
