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SH7014 Datasheet(PDF) 273 Page - Renesas Technology Corp |
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SH7014 Datasheet(HTML) 273 Page - Renesas Technology Corp |
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273 / 754 page  10. Multifunction Timer Pulse Unit (MTU) Rev.5.00 Sep. 27, 2007 Page 239 of 716 REJ09B0398-0500 Procedure for Setting Cascade Connection Mode (Figure 10.21): 1. Set the TPSC2 to TPSC 0 bits of the channel 1 timer control register (TCR) to B'111 to select “count by TCNT2 overflow/underflow.” 2. Set the CST bits corresponding to the upper and lower 16 bits in the TSTR to 1 to start the count operation. Cascade connection operation Select cascade connection Start counting Cascade connection operation 1 2 Figure 10.21 Procedure for Selecting Cascade Connection Mode Cascade Connection Operation Examples ⎯Phase Counting Mode: Figure 10.22 shows an example of operation when the TCNT1 counter is set to count on TCNT2 overflow/underflow and channel 2 is set to phase counting mode. The TCNT1 counter increments with a TCNT2 counter overflow and decrements with a TCNT2 underflow. TCLKA TCLKB TCNT2 FFFD FFFF FFFF FFFE 0000 0001 0001 0000 0002 TCNT1 0000 0000 0001 Figure 10.22 Cascade Connection Operation Example (Phase Counting Mode) |
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