Astronics 407661-001, Руководство пользователя

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Publication No. 980824-114 Rev. A 1260-114 User Manual
Astronics Test Systems Module Operation 3-9
Table 3-4, Ports G-L Register Functionality of the 1260-114 Module
Register Table
Ports G-L
Module Version Bit Functionality Description
TTL and CMOS
0
Each port is an 8-bit register where the lowest order bit
corresponds to lowest order connector pin of the port group. A ‘1’
written to any bit drives the appropriate output driver high while a
‘0’ drives the appropriate output driver low. If a port is read, the
data will appear identical to what was written to the register.
1
2
3
4
5
6
7
OC
0
Each port is an 8-bit register where the lowest order bit
corresponds to lowest order connector pin of the port group. A ‘1’
written to any bit enables the appropriate open-collector output
transistor while a ‘0’ disables the appropriate open-collector
output transistor. If a port is read, the data will appear inverted
from what was written to the register, assuming the external
power supply pulls up the collector output of the transistor
through the external load
1
2
3
4
5
6
7
HVOC
0 Not Used
1 Not Used
2 Not Used
3 Not Used
4 Not Used
5 Not Used
6 Not Used
7 Not Used