1.8.3 Watchdog timer output (J4)
The DVMB-554E contains a watchdog timer that will reset the CPU or send a signal to PIRQE in the event the CPU stops processing. This feature means the DVMB-554E will recover from a software failure or an EMI problem. The J4 jumper settings control the outcome of what the computer will do in the event the watchdog timer is tripped.
Table 1.4: Watchdog timer output (J4)
Function | Jumper Setting |
IRQ11 | 1 |
| 1-2 closed |
* Reset | 1 |
| 2-3 closed |
*default setting | |
Note: | The interrupt output of the watchdog timer is a |
| low level signal. It will be held low until the |
| watchdog timer is reset. |
Table 1.5: ATX/AT Mode selector (J5) |
Function | Jumper Setting |
AT Mode | 1 |
| 1-2 closed |
ATX Mode | 1 |
| 2-3 closed |
