Line Driver Physical Output States
The line driver output state depends not only on the logical level of the selected Line Output signal but also on the following I/O block settings:
LineFormat, LineMode, and LineInverter.
| LineFormat | LineMode | LineInverter / LineOutput logical level | Line driver output state |
|---|---|---|---|
| ISO | Output |
False / low or True / high |
The opto-coupler switch is turned OFF. |
|
False / high or True / low |
The opto-coupler switch is turned ON. | ||
| TTL CMOS |
Output |
False / low or True / high |
The I/O line is driven LOW. |
|
False / high or True / low |
The I/O line is driven HIGH. | ||
| TTL | DriveLow |
False / low or True / high |
The I/O line is driven LOW. |
|
False / high or True / low |
The I/O line is not driven. | ||
| TTL | DriveHigh |
False / low or True / high |
The I/O line is not driven. |
|
False / high or True / low |
The I/O line is driven HIGH. |