NEC V850E/PH2, User Manual

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Chapter 10 16-bit Inverter Timer/Counter R
User’s Manual U16580EE3V1UD00
10.4.2 Compare register rewrite operation
In the PWM mode, high-accuracy T-PWM mode, PWM mode with dead time, external trigger pulse
output mode, and triangular wave PWM mode, the reload function is valid. (In all other modes,
reload-related settings are invalid.)
The compare/control registers with the reload function are listed below.
• TRnCCR0 to TRnCCR5
• TRnOPT1
Compare registers with the reload function can be rewritten in the following modes.
• Anytime rewrite mode
In this mode, each compare register is updated independently, and when a compare register is
written to, the register is updated to the value written during anytime write access.
• Reload mode (batch rewrite)
When the TRnCCR1 register is written to, all the registers are updated at the next reload timing
(reload).
Reload does not occur even if a register other than the TRnCCR1 register is written to.
A reload request flag (TRnRSF) is provided.
The compare register can be rewritten using DMA transfer. DMA transfer is performed as follows.
Note: Dummy data transfer
Address Register Name DMA Transfer Sequence
FFFFF590H TR0CCR5
FFFFF592H TR0CCR4
FFFFF594H - Note
FFFFF596H - Note
FFFFF598H TR0CCR0
FFFFF59AH TR0CCR3
FFFFF59CH TR0CCR2
FFFFF59EH TR0CCR1
Address Register Name DMA Transfer Sequence
FFFFF5D0H TR1CCR5
FFFFF5D2H TR1CCR4
FFFFF5D4H - Note
FFFFF5D6H - Note
FFFFF5D8H TR1CCR0
FFFFF5DAH TR1CCR3
FFFFF5DCH TR1CCR2
FFFFF5DEH TR1CCR1