ISD94100 Series Technical Reference Manual
Sep 9, 2019
Page
420
of 928
Rev1.09
IS
D
9
410
0
S
ER
IE
S
T
E
C
HN
ICA
L
RE
F
E
RE
NCE
M
AN
U
AL
Table 6.8.5-2 PWM Pulse Generation Event Priority for Down-Counter
Table 6.8.5-3 PWM Pulse Generation Event Priority for Up-Down-Counter
6.8.5.14 PWM Output Mode
The PWM supports two output modes: Independent mode which may be applied to DC motor
system, Complementary mode with dead-time insertion which may be used in the application of AC
induction motor and permanent magnet synchronous motor.
6.8.5.15 Independent mode
By default, the PWM is operating in independent mode, independent mode is enabled when channel
n corresponding PWMMODEn (PWM_CTL1[26:24]) bit is set to 0. In this mode six PWM channels:
PWM_CH0, PWM_CH1, PWM_CH2, PWM_CH3, PWM_CH4 and PWM_CH5 are running off its
own period and duty as shown in Figure 6.8-20.
Priority
Down Event
1 (Highest)
Zero event (CNT = zero)
2
Compare down event of odd channel (CNT = CMPDm )
3
Compare down event of even channel (CNT = CMPDn )
4 (Lowest)
Period event (CNT = PERIOD)
Priority
Up Event
Down Event
1 (Highest)
Compare up event of odd channel (CNT = CMPUm Compare down event of odd channel (CNT = CMPDm)
2
Compare up event of even channel (CNT =
CMPUn)
Compare down event of even channel (CNT = CMPDn)
3
Zero event (CNT = zero)
Period (center) event (CNT = PERIOD)
4
Compare down event of odd channel (CNT =
CMPDm)
Compare up event of odd channel (CNT = CMPUm)
5 (Lowest)
Compare down event of even channel (CNT =
CMPDn)
Compare up event of even channel (CNT = CMPUn)