SH7014 Datasheet, PDF (308/754 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer

10. Multifunction Timer Pulse Unit (MTU)
Table 10.14 Mode Transition Combinations
Before
Normal
PWM1
Normal
(1)
(2)
PWM1
(5)
(6)
PWM2
(9)
(10)
PCM
(13)
(14)
Legend:
Normal: Normal mode
PWM1: PWM mode 1
PWM2: PWM mode 2
PCM: Phase counting modes 1 to 4
After
PWM2
(3)
(7)
(11)
(15)
PCM
(4)
(8)
(12)
(16)
The above abbreviations are used in some places in following descriptions.
10.8.4 Overview of Initialization Procedures and Mode Transitions in Case of Error
during Operation, etc.
• When making a transition to a mode (Normal, PWM1, PWM2, PCM) in which the pin output
level is selected by the timer I/O control register (TIOR) setting, initialize the pins by means of
a TIOR setting.
• In PWM mode 1, since a waveform is not output to the TIOC*B (TIOC*D) pin, setting TIOR
will not initialize the pins. If initialization is required, carry it out in normal mode, then switch
to PWM mode 1.
• In PWM mode 2, since a waveform is not output to the cycle register pin, setting TIOR will
not initialize the pins. If initialization is required, carry it out in normal mode, then switch to
PWM mode 2.
• In normal mode or PWM mode 2, if TGRC and TGRD operate as buffer registers, setting
TIOR will not initialize the buffer register pins. If initialization is required, clear buffer mode,
carry out initialization, then set buffer mode again.
• In PWM mode 1, if either TGRC or TGRD operates as a buffer register, setting TIOR will not
initialize the TGRC pin. To initialize the TGRC pin, clear buffer mode, carry out initialization,
then set buffer mode again.
Note: Channel number is substituted for * indicated in this article.
Pin initialization procedures are described below for the numbered combinations in table 10.14.
The active level is assumed to be low.
Rev.5.00 Sep. 27, 2007 Page 274 of 716
REJ09B0398-0500