Chapter 3

 

 

Hardware

Table 3-18. User GPIO Signals Pin/Signal Descriptions (J8)

 

 

 

 

 

 

Pin #

Signal

Description

 

 

1

GPIO8

User defined

 

 

 

 

 

 

 

2

GPIO9

User defined

 

 

3

GPIO10

User defined

 

 

 

 

 

 

 

4

GPIO11

User defined

 

 

 

 

 

 

 

5

GPIO12

User defined

 

 

6

GPIO13

User defined

 

 

 

 

 

 

 

7

GPIO14

User defined

 

 

 

 

 

 

 

8

GPIO15

User defined

 

 

9

GND

Ground

 

 

10

GND

Ground

 

 

 

 

 

 

Notes: The shaded area denotes ground.

Oops! Jumper (BIOS Recovery)

The Oops! jumper is provided in the event you’ve selected BIOS settings that prevent you from booting the system. By using the Oops! jumper you can stop the current BIOS settings in the CMOS from being loaded, allowing you to proceed, using the default settings. Connect the DTR pin to the RI pin on Serial port 1 (COM 1) prior to boot up to prevent the present BIOS settings from loading. After booting with the Oops! jumper in place, remove the Oops! jumper and go into BIOS Setup.

To restore your BIOS setting changes without the errors, you must first select Load Factory Default Settings, which will automatically load and save the defaults and reboot the system. Then you can modify the default settings to your desired values. Ensure you save the changes before rebooting the system.

NOTE

The CoreModule 420 Serial Port 1 (J3) is a 10-pin header and uses

 

pin 7 = DTR and pin 8 = RI. At Serial Port 1, short pin 7 to 8, as

 

shown in Figure 3-2. Alternatively, you may short the equivalent

 

pins on the DB9 connector attached to Serial Port 1 as shown in

 

Figure 3-2.

 

 

9 7 5 3 1

1

2

3

4

5

Serial Ports (J3, J9)

Standard DB9 Serial

 

 

 

 

(COM1 or COM2)

Or Port Connector (Female)

 

 

 

 

Side View

Rear View

 

 

 

 

108 6 4 2

 

6

7

8

9

Figure 3-2. Oops! Jumper

CM420serconjump

Serial Console

The CM 420 BIOS supports the serial console (or console redirection) feature. These I/O functions are provided by an ANSI-compatible serial terminal, or the equivalent terminal emulation software running on another system. This can be very useful when setting up the BIOS on a production line for systems that are not connected to a keyboard and display.

CoreModule 420

Reference Manual

41

Page 47
Image 47
Ampro Corporation 5001692A manual Oops! Jumper Bios Recovery, Serial Console