SH7261 datasheet(601/1348 Pages) RENESAS

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Section 12 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 Sep. 07, 2007 Page 569 of 1312

REJ09B0320-0200

12.8.3

Operation in Case of Re-Setting Due to Error During Operation, etc.

If an error occurs during MTU2 operation, MTU2 output should be cut by the system. Cutoff is

performed by switching the pin output to port output with the PFC and outputting the inverse of

the active level. The pin initialization procedures for re-setting due to an error during operation,

etc., and the procedures for restarting in a different mode after re-setting, are shown below.

The MTU2 has six operating modes, as stated above. There are thus 36 mode transition

combinations, but some transitions are not available with certain channel and mode combinations.

Possible mode transition combinations are shown in table 12.59.

Table 12.59 Mode Transition Combinations

After

Before

Normal

PWM1

PWM2

PCM

CPWM

RPWM

Normal

(1)

(2)

(3)

(4)

(5)

(6)

PWM1

(7)

(8)

(9)

(10)

(11)

(12)

PWM2

(13)

(14)

(15)

(16)

None

PCM

(17)

(18)

(19)

(20)

None

CPWM

(21)

(22)

None

(23) (24)

(25)

RPWM

(26)

(27)

None

(28)

(29)

[Legend]

Normal: Normal mode

PWM1: PWM mode 1

PWM2: PWM mode 2

PCM:

Phase counting modes 1 to 4

CPWM: Complementary PWM mode

RPWM: Reset-synchronized PWM mode

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