Fujitsu FR81S User Manual
CHAPTER 23: 32-BIT INPUT CAPTURE
7. Q&A
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: 32-BIT INPUT CAPTURE
FUJITSU SEMICONDUCTOR CONFIDENTIAL
25
7.1. Effective Edge Polarity of External Input: Types and
How to Select?
This section shows types of the effective edge polarity of external input and the selection
method.
There are 3 types of the effective edge polarity: rising, falling and both edges.
You can configure it using the effective edge polarity bits of the external input (ICS45.EG[41:40]),
(ICS45:EG[51:50]), (ICS67.EG[61:60]), (ICS67:EG[71:70]), (ICS89.EG[81:80]), (ICS89:EG[91:90]).
Operation
Effective edge polarity bits of the external input
(EG[n1:n0] n=4 to9)
To select rising edge
Select "01".
To select falling edge
Select "10".
To select both edges
Select "11".
MB91520 Series
MN705-00010-1v0-E
900