7906 datasheet(210/531 Pages) RENESAS

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THREE-PHASE WAVEFORM MODE

7906 Group User’s Manual Rev.2.0

10-5

10.2.1 Waveform output mode register

Figure 10.2.2 shows the structure of the waveform output mode register (the three-phase waveform mode).

Note that writing to bits 0 through 6 of this register must be performed when the counting in timers A0

through A3 is halts.

10.2 Block description

Fig. 10.2.2 Structure of waveform output mode register (three-phase waveform mode)

Waveform output mode register (Address A616)

b7 b6 b5 b4 b3 b2 b1 b0

Waveform output select bits

(Note 1)

Three-phase output polarity set buffer

(Valid in three-phase mode 1) (Note 2)

Three-phase mode select bit

Dead-time timer trigger select bit

(Note 3)

Waveform output control bit

Bit name

Bit

Function

At reset

R/W

X: It may be either “0” or “1.”

Notes 1: When not using the pulse output mode and three-phase waveform mode, be sure to fix these bits to “0002.”

2: This bit is invalid in three-phase mode 0.

3: When the saw-tooth-wave modulation output is performed, be sure to fix this bit to “0.”

4: Writing to any of bits 0 to 6 must be performed while counting for timers A0 to A3 halts.

1 0 0 : Three-phase waveform mode

0 : “H” output

1 : “L” output

0 : Three-phase mode 0

1 : Three-phase mode 1

0: Both falling and rising edges of one-shot

pulse for timers A0 to A2

1: Only the falling edge of one-shot pulse for

timers A0 to A2

0 : Waveform output disabled

1 : Waveform output enabled

Invalid in the three-phase waveform mode.

7906 Datasheet(PDF) 210 Page - Renesas Technology Corp