
Chapter 3 |
| Hardware | |
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| Pin # | Signal | Description |
| 38 | VSYNC | Vertical Sync – This signal is used for the digital vertical sync output to the |
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| CRT. Also used (with HSYNC) to signal power management state information |
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| to the CRT per the VESA DPMS standard. |
| 39 | AGNDR | Analog Ground for Red |
| 40 | RED | Red – This pin provides the Red analog output to the CRT. |
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| 41 | AGNDG | Analog Ground for Green |
| 42 | GREEN | Green – This pin provides the Green analog output to the CRT. |
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| 43 | AGNDB | Analog Ground for Blue |
| 44 | BLUE | Blue – This pin provides the Blue analog output to the CRT. |
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Notes: The shaded area denotes power or ground. The signals marked with * indicate active low.
Miscellaneous
Real Time Clock (RTC)
The CoreModule 420 contains a Real Time (time of day) Clock (RTC), which can be backed up with a Lithium Battery. The CoreModule 420 will function without a battery in those environments, which prohibit inclusion of batteries. The CoreModule 420 will also continue to operate after the battery life has been exceeded. Under these conditions all setup information is restored from the onboard Flash memory during POST along with the default date and time information.
NOTE | Some operating systems require a valid default date and time to function. |
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User GPIO Signals
The CoreModule 420 provides GPIO pins for customer use and the signals are routed to connector J8. An example of how to use the GPIO pins is provided in the Miscellaneous Source Code Examples subdirectory, under the CoreModule 420 Software menu on the CoreModule 420 Doc & SW
CAUTION To prevent a system crash, or render the CoreModule 420 BIOS unusable, do not attempt to use the master GPIO pins (GPIOs
The example program can be built by using the make.bat file. This produces a
40 | Reference Manual | CoreModule 420 |