Renesas M16C/60 Series Hardware Manual page 139

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M16C/6N5 Group
Three-phase PWM control register 1 (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
0
Note 1: Write to this register after setting the PRC1 bit of PRCR register to "1" (write enable). Note also that this register can
only be rewritten when timers A1, A2, A4 and B2 are idle.
Note 2: The effects of the INV11 bit are described in the table below.
Item
Mode
TA11, TA21, TA41 registers
INV00 bit, INV01 bit
INV13 bit
Note 3: If the INV06 bit is "1" (sawtooth wave modulation mode), set this bit to "0" (three-phase mode 0). Also, if the INV11
bit is "0", set the PWCON bit to "0" (timer B2 reloaded by a timer B2 underflow).
Note 4: The INV13 bit is effective only when the INV06 bit is "0" (triangular wave modulation mode) and the INV11 bit is "1"
(three-phase mode 1).
Note 5: If all of the following conditions hold true, set the INV16 bit to "1" (dead time timer triggered by the rising edge of
three-phase output shift register output).
The INV15 bit is "0" (dead time timer enabled)
When the INV03 bit is set to "1" (three-phase motor control timer output enabled), the Dij bit and DiBj bit (i: U, V,
or W, j: 0, 1) have always different values (the positive-phase and negative-phase always output different levels
during the period other than dead time).
Conversely, if either one of the above conditions holds false, set the INV16 bit to "0" (dead time timer triggered by the
falling edge of one-shot timer pulse).
Figure 1.14.3 INVC1 Register
Rev.1.00 2003.05.30 page 125
Symbol Address
INVC1 01C9
Bit symbol Bit name
Timer A1, A2, A4 start
INV10
trigger signal select bit
Timer A1-1, A2-1, A4-1
INV11
control bit
Dead time timer count
INV12
source select bit
Carrier wave detect flag
INV13
INV14 Output polarity control bit
INV15 Dead time invalid bit
Dead time timer trigger
INV16
select bit
-
Reserved bit
(b7)
INV11 = 0
Three-phase mode 0
Not used
Has no effect. ICTB2 counted every time
timer B2 underflows regardless of
whether the INV00 to INV01 bits are set.
Has no effect
Three-phase Motor Control Timer Function
After reset
00
16 16
Description
0: Timer B2 underflow
1: Timer B2 underflow and write to the
TB2 register
0: Three-phase mode 0
(Note 2) 1: Three-phase mode 1
0 : f or f
1 2
1 : f divided by 2 or f
1
0: Timer A output at even-numbered occurrences
(TA11, TA21, TA41 register value counted)
1: Timer A output at odd-numbered occurrences
(Note 4)
(TA1, TA2, TA4 register value counted)
0 : Output waveform "L" active
1 : Output waveform "H" active
0: Dead time timer enabled
1: Dead time timer disabled
0: Falling edge of timer A4, A1 or A2
one-shot pulse
1: Rising edge of three-phase output shift
register (U, V or W phase) output
Set to "0"
Three-phase mode 1
Used
Effect
Effective when INV11 bit is "1" and
INV06 bit is "0"
RW
RW
(Note 3)
RW
RW
divided by 2
2
RO
RW
RW
(Note 5)
RW
RW
INV11 = 1