R5F72115D160FPV datasheet(546/1228 Pages) RENESAS

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Section 10 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 May. 08, 2008 Page 522 of 1200

REJ09B0344-0200

10.4.10

MTU2–MTU2S Synchronous Operation

(1)

MTU2–MTU2S Synchronous Counter Start

The counters in the MTU2 and MTU2S which operate at different clock systems can be started

synchronously by making the TCSYSTR settings in the MTU2.

(a)

Example of MTU2–MTU2S Synchronous Counter Start Setting Procedure

Figure 10.83 shows an example of synchronous counter start setting procedure.

Stop count operation

MTU2-MTU2S synchronous

counter start

Set the necessary operation

[1]

[2]

Set TCSYSTR

[3]

[1] Use TSTR registers in the MTU2 and MTU2S and halt the

counters used for synchronous start operation.

[2] Specify necessary operation with appropriate registers such as

TCR and TMDR.

[3] In TCSYSTR in the MTU2, set the bits corresponding to the

counters to be started synchronously to 1. The TSTRs are

automatically set appropriately and the counters start

synchronously.

Notes: 1. Even if a bit in TCSYSTR corresponding to an operating

counter is cleared to 0, the counter will not stop. To stop

the counter, clear the corresponding bit in TSTR to 0

directly.

2. To start channels 3 and 4 in reset-synchronized PWM

mode or complementary PWM mode, make appropriate

settings in TCYSTR according to the TSTR setting for

the respective mode. For details, refer to section 10.4.7,

Reset-Synchronized PWM Mode, and section 10.4.8,

Complementary PWM Mode.

Figure 10.83 Example of Synchronous Counter Start Setting Procedure

R5F72115D160FPV Datasheet(PDF) 546 Page - Renesas Technology Corp