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THREE-PHASE WAVEFORM MODE

7906 Group User’s Manual Rev.2.0

10-17

10.3 Three-phase mode 0

10.3.1 Setting for three-phase mode 0

Explanation of the triangular wave modulation output and saw-tooth-wave modulation output in three-phase

mode 0 is described below. Table 10.3.1 lists the differences between the triangular wave modulation

output and the saw-tooth-wave modulation output (in view of software).

Table 10.3.1 Differences between triangular wave modulation output and saw-tooth-wave modulation

output (in view of software)

Figures 10.3.1 and 10.3.2 show an initial setting example for registers relevant to three-phase mode 0,

Figure 10.3.3 shows a data-updating example in three-phase mode 0.

Note that the initial output level at the three-phase waveform output pin is undefined. Be sure to start the

three-phase waveform output (in other words, the waveform output is enabled.) after the output level at the

three-phase waveform output pin is stabilized.

Falling and Rising edges of timers A0

through A2

Not reversed.

Trigger of dead-time timer

Contents of output polarity set

buffer

Falling edge of timers A0 through A2

Reversed at each timer A3 interrupt

request occurrence.

Triangular wave modulation output

Saw-tooth-wave modulation output

7906 Datasheet(PDF) 222 Page - Renesas Technology Corp