SH7641 Datasheet, PDF (720/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 18 Multi-Function Timer Pulse Unit (MTU)
(27) Operation when Error Occurs during Reset-Synchronous PWM Mode Operation, and
Operation is Restarted in PWM Mode 1
Figure 18.111 shows an explanatory diagram of the case where an error occurs in reset-
synchronous PWM mode and operation is restarted in PWM mode 1 after re-setting.
MTU module
output
TIOC3A
1
2
3
4
RESET^{TOCR TMDR TOER}
(RPWM) (1)
5
6
PFC TSTR
(MTU) (1)
7
8
9
10 11 12 13
Match Error PFC TSTR TMDR TIOR PFC
occurs (PORT) (0) (PWM1) (1 init (MTU)
0 out)
14
TSTR
(1)
TIOC3B
• Not initialized (TIOC3B)
TIOC3D
Port output
TIOC3A/PTE[7]
High-Z
• Not initialized (TIOC3D)
TIOC3B/PTE[6]
High-Z
TIOC3D/PTE[4]
High-Z
Figure 18.111 Error Occurrence in Reset-Synchronous PWM Mode,
Recovery in PWM Mode 1
1 to 10 are the same as in figure 18.110.
11. Set PWM mode 1. (MTU positive phase output is low, and negative phase output is high.)
12. Initialize the pins with TIOR. (In PWM mode 1, the TIOC *B side is not initialized.)
13. Set MTU output with the PFC.
14. Operation is restarted by TSTR.
Rev. 4.00 Sep. 14, 2005 Page 670 of 982
REJ09B0023-0400