SH7014 Datasheet, PDF (265/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

10. Multifunction Timer Pulse Unit (MTU)
Input Capture Function: In the input capture mode, the TCNT value is transferred into the TGR
register when the input edge is detected at the input capture/output compare pin (TIOC).
Detection can take place on the rising edge, falling edge, or both edges. Channels 0 and 1 can use
other channel counter input clocks or compare-match signals as input capture sources.
The procedure for selecting the input capture operation (figure 10.12) is:
1. Set the TIOR to select the input capture function of the TGR, then select the input capture
source, and rising edge, falling edge, or both edges as the input edge.
2. Set the CST bit in the TSTR to 1 to start the TCNT counting.
Input selection
Select input-capture input ¹
Start counting
2
Input capture operation
Figure 10.12 Procedure for Selecting Input Capture Operation
Rev.5.00 Sep. 27, 2007 Page 231 of 716
REJ09B0398-0500