SH7080_09 Datasheet, PDF (606/1622 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family

Section 11 Multi-Function Timer Pulse Unit 2 (MTU2)
11.4.7 Reset-Synchronized PWM Mode
In the reset-synchronized PWM mode, three-phase output of positive and negative PWM
waveforms that share a common wave transition point can be obtained by combining channels 3
and 4.
When set for reset-synchronized PWM mode, the TIOC3B, TIOC3D, TIOC4A, TIOC4C,
TIOC4B, and TIOC4D pins function as PWM output pins and TCNT3 functions as an upcounter.
Table 11.52 shows the PWM output pins used. Table 11.53 shows the settings of the registers.
Table 11.52 Output Pins for Reset-Synchronized PWM Mode
Channel
3
4
Output Pin
TIOC3B
TIOC3D
TIOC4A
TIOC4C
TIOC4B
TIOC4D
Description
PWM output pin 1
PWM output pin 1' (negative-phase waveform of PWM output 1)
PWM output pin 2
PWM output pin 2' (negative-phase waveform of PWM output 2)
PWM output pin 3
PWM output pin 3' (negative-phase waveform of PWM output 3)
Table 11.53 Register Settings for Reset-Synchronized PWM Mode
Register
TCNT_3
TCNT_4
TGRA_3
TGRB_3
TGRA_4
TGRB_4
Description of Setting
Initial setting of H'0000
Initial setting of H'0000
Set count cycle for TCNT_3
Sets the turning point for PWM waveform output by the TIOC3B and TIOC3D pins
Sets the turning point for PWM waveform output by the TIOC4A and TIOC4C pins
Sets the turning point for PWM waveform output by the TIOC4B and TIOC4D pins
Rev. 4.00 Dec. 15, 2009 Page 546 of 1558
REJ09B0181-0400