
PIO-D144 User’s Manual
Page 6 Version: 2.1 Date: 1999/10
2.4 D/I/O Architecture
•
The RESET\ is in Low-state
!
all D/I/O operation is disable
•
The RESET\ is in High-state
!
all D/I/O operation is enable.
•
If D/I/O is configured as D/I port
!
D/I=external input signal
•
If D/I/O is configured as D/O port
!
D/I = read back of D/O
•
If D/I/O is configured as D/I port
!
send to D/O will change the D/O latch
register only. The D/I & external input signal will not change.
disable\
input Latch
Clock input
D/O latch CKT
RESET\ (Sec. 3.3.1)
Data
(Sec. 3.3.7)
I/O select (Sec. 3.3.9)
D/I/O
disable
Buffer input
Clock input
D/I buffer CKT
Data
(Sec. 3.3.7)
ГК
Атлант
Инжиниринг
–
официальный
представитель
в
РФ
и
СНГ
+7(495)109-02-08 [email protected] www.bbrc.ru