SH7641 Datasheet, PDF (692/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 18 Multi-Function Timer Pulse Unit (MTU)
18.8.3 Operation in Case of Re-Setting Due to Error During Operation, etc.
If an error occurs during MTU operation, MTU 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 MTU 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 18.43.
Table 18.43 Mode Transition Combinations
Before
Normal
PWM1
Normal
(1)
(2)
PWM1
(7)
(8)
PWM2
(13)
(14)
PCM
(17)
(18)
CPWM
(21)
(22)
RPWM
(26)
(27)
[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-synchronous PWM mode
PWM2
(3)
(9)
(15)
(19)
None
None
After
PCM
(4)
(10)
(16)
(20)
None
None
CPWM
(5)
(11)
None
None
(23) (24)
(28)
RPWM
(6)
(12)
None
None
(25)
(29)
The above abbreviations are used in some places in following descriptions.
Rev. 4.00 Sep. 14, 2005 Page 642 of 982
REJ09B0023-0400