SH7052 datasheet(399/919 Pages) RENESAS

399 / 919 page

373

Select counter clock

Set port-ATU-II connection

Set input waveform edge

detection

Start counter

Input capture operation

Start

Figure 10.53 Sample Setup Procedure for Input Capture

Sample Setup Procedure for Waveform Output by Output Compare-Match: An example of

the setup procedure for waveform output by output compare-match is shown in figure 10.54.

1. Select the first-stage counter clock ø' in prescaler register (PSCR), and the second-stage

counter clock ø" with the CKSEL bit in the timer control register (TCR). When selecting an

external clock, also select the external clock edge type with the CKEG bit in TCR.

2. Set the port control register corresponding to the waveform output port to ATU output

compare-match output. Also set the corresponding bit to 1 in the port IO register to specify the

output attribute for the port.

3. Select 0, 1, or toggle output for output compare-match output with the timer I/O control

compare-match by making the appropriate setting in the interrupt enable register (TIER).

4. Set the timing for compare-match generation in the ATU general register (GR) corresponding

to the port set in 2.

5. Set the corresponding bit to 1 in the timer start register (TSTR) to start the free-running

counter (TCNT). Waveform output is performed from the relevant port when the TCNT value

and GR value match.

SH7052 데이터시트(PDF) 399 Page - Renesas Technology Corp