
THREE-PHASE WAVEFORM MODE
7905 Group User’s Manual Rev.1.0
10-19
10.3 Three-phase mode 0
Fig. 10.3.1 Initial setting example for registers relevant to three-phase mode 0 (1)
Timers A0 through A3 are inactive.
b7
b0
Count start register 0
(address 4016)
0 0 0
0
Stops counting in timer A0.
Stops counting in timer A1.
Stops counting in timer A2.
Stops counting in timer A3.
Continues to the next page.
b7
b0
Setting of dead-time timer
Dead-time timer
(address A716)
A value in the range from “0016” to “FF16”
is set.
b7
b0
Setting of waveform output mode register
Waveform output mode register
(address A616)
0
1
0
Dead-time timer trigger
select bit
0 : Falling and Rising edges
of one-shot pulse
1 : Falling edge of one-shot
pulse
Waveform outout is disabled.
Three-phase mode 0
0
: It may be either “0” or “1.”
b7
b0
Setting of timers A0 through A2 to one-shot pulse mode
Timer A0/A1/A2 mode register
(addresses 5616 to 5816)
1
11
0
Count source select bits
(See Table 7.2.3.)
Setting of timer A3 to timer mode
Timer A3 mode register
(address 5916)
b7
b0
0
b7
b0
Setting of timer A0/A1/A2 interrupt request to “disabled”
Timer A0/A1/A2 interrupt
control register
(addresses 7516 to 7716)
0 0
0
No Interrupt request
Interrupt disabled
Setting of period of timer A3’s carrier wave
b7
b0
A value in the range from “000016” to
“FFFF16” is set.
b7
(b8)
(b15)
b0
Setting of output width of each phase of timers A0
through A2
b7
b0
A value in the range from “000016” to
“FFFF16” is set.
b7
(b8)
(b15)
b0
Timer A3 register
(addresses 4D16, 4C16)
Timer A0 register
(addresses 4716, 4616)
Timer A1 register
(addresses 4916, 4816)
Timer A2 register
(addresses 4B16, 4A16)
b7
b0
Setting of three-phase output data register 0, 1
Three-phase output data register 0
(address A816)
V-phase output polarity set buffer
0 : “H” output
1 : “L” output
00
0
Clock-source-of-dead-time-timer
select bits
0 0 : f2
0 1 : f2/2
1 0 : f2/4
b7 b6
U-phase output polarity set buffer
0 : “H” output
1 : “L” output
Released from W-phase output
fixation.
Released from V-phase output
fixation.
Released from U-phase output
fixation.
b7
b0
W-phase output polarity set buffer
0 : “H” output
1 : “L” output
Three-phase output data register 1
(address A916)
: It may be either “0” or “1.”
Count source select bits
(See Table 7.2.3.)
Timer A3 interrupt priority level
Set to one of levels 1 through 7.
b7
b0
Setting of timer A3 interrupt priority level
Timer A3 interrupt control register
(address 7816)
0
No Interrupt request
When not using the TA3OUT pin
(in other words, the TA3OUT pin
is used as a programmable I/O
port pin.), be sure to clear this
bit to “0.”