Rev. 1.0, 02/00, page 1133 of 1141
E.2
Sample External Circuits
Examples of external circuits for the servo section, and sync signal detection circuit are shown in
figures E.3, E.4.
1. Servo Section
An example of the external circuit for the DRMPWM output and CAPPWM output pins is shown
in figure E.3.
R
1
DRMPWM
CAPPWN
C
1
Figure E.3 Sample External Circuit for Servo Section
2. Sync Signal Detection Circuit Section in Servo Circuit
Figure E.4 shows an example of the external circuit for the sync signal detection circuit section in
the servo circuit.
33 k
Ω
Csync
Note: Reference values are shown.
The board floating capacitance and wiring resistance must also
be taken into consideration in determining the values.
10 pF
Figure E.4 Example of External Circuit for Sync Signal Detection Circuit Section