Chapter
2 Register
Map and Descriptions
©
National Instruments Corporation
2-9
Static DIO Register-Level Programmer Manual
Watchdog Timers High-Impedance Registers
WatchdogHighImp(
N
)
This register configures port
N
to go to high impedance when the watchdog timer (WDT)
expires, where
N
is the port number in hexidecimal. WatchdogHighImp(
N
) is only valid for
bidirectional ports.
Note
Ports can range from 0 to 11 (0x0 to 0xB), depending on your device. For each port,
you must add an additional offset equal to 0x10 time the port number in hex.
Address Offset:
0x46 + 0x(
N
)0
Type:
Read-write
Size:
8-bit
Bit Map:
Bit
Name
Description
7–1
Reserved
Write only zeros to this bit.
0
WDTHImp
Write a 1 to this register to make the port go to high
impedance when the watchdog timer expires. Write a 0 to
this register to make the port output high/low values on a
per line basis. The watchdog timer must be enabled for
either option to activate.
7
6
5
4
3
2
1
0
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
WDTHImp