3. External Connection
40
DIO-32DM-PE
Connection method to the external device
-Control I/O-
Connection to the control signal (EXT**)
In order to control bus mastering from outside, five signals are provided each for pattern I/O. Before
using the signals to be input as control signals please verify their pulse widths.
"0" at the end of a signal name indicates a pattern input signal and "1" a pattern output signal.
Table 3.5. Control signal
Signal name Direction
Usage
Signal name Direction
Usage
EXTCLK0 In
Pattern
input
clock
EXTCLK1
In
Pattern output clock
EXTSTART0
In
Pattern input start signal
EXTSTART1
In
Pattern output start signal
EXTSTOP0
In
Pattern input stop signal
EXTSTOP1
In
Pattern output stop signal
EXTREQ0
In
Pattern input REQ signal
EXTREQ1
Out
Pattern output REQ signal
EXTACK0
Out
Pattern input ACK signal
EXTACK1
In
Pattern output ACK signal
Detailed Control Input Signal Circuit
Control signals to be input include clock, start, stop, and handshake input signals.
Figure 3.4. Control signal input circuit
SN74LV245A
22
Ω
Board
External circuit
GND
Input pin
EXTCLK0/1
EXTSTART0/1
EXTSTOP0/1
EXREQ0
EXTACK1
5V TTL IC or LVTTL IC
Summary of Contents for DIO-32DM-PE
Page 7: ...vi DIO 32DM PE ...
Page 15: ...1 Before Using the Product 8 DIO 32DM PE ...
Page 41: ...2 Setup 34 DIO 32DM PE ...
