SH7080 Datasheet, PDF (698/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 11 Multi-Function Timer Pulse Unit 2 (MTU2)
11.8.3 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 11.59.
Table 11.59 Mode Transition Combinations
Before
Normal
PWM1
PWM2
Normal
(1)
(2)
(3)
PWM1
(7)
(8)
(9)
PWM2
(13)
(14)
(15)
PCM
(17)
(18)
(19)
CPWM
(21)
(22)
None
RPWM
(26)
(27)
None
[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
After
PCM
(4)
(10)
(16)
(20)
None
None
CPWM
(5)
(11)
None
None
(23) (24)
(28)
RPWM
(6)
(12)
None
None
(25)
(29)
Rev. 3.00 May 17, 2007 Page 640 of 1582
REJ09B0181-0300