Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 3.00 Sep. 27, 2007 Page 349 of 758
REJ09B0243-0300
9.8.3
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. For large-current pins, output can also be cut by hardware, using port output
enable (POE). 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 9.59.
Table 9.59 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
None
PCM (17) (18) (19) (20) None
None
CPWM (21)
(22)
None None (23)
(24)
(25)
RPWM
(26) (27) None
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
Содержание SH7124 R5F7124
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