Utilities
43
CM1-86DX3
4.4
User GPIO Interface
Table 4-3 describes the pin signals of the GPIO interface, which uses a 10-pin header with 2
rows, odd/even sequence (1, 2), and 0.079" (2mm) pitch.
Note
: The shaded table cells denote ground.
4.5
Oops! Jumper (BIOS Recovery)
The Oops! jumper is provided in the event you have 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. Install a
jumper on the CN15, 2-pin header or 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 the BIOS Setup Utility. Change the
desired BIOS settings, or select the default settings, and save changes before rebooting the
system.
To convert a standard DB9 connector to an Oops! Jumper, short together the DTR (4) and RI (9)
pins on the rear of the connector as shown in the following figure on the Serial Port 1 DB9 con-
nector.
4.6
Serial Console
The CM1-86DX3 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 emula-
tion 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.
4.7
Serial Console BIOS Setup
The serial console (console redirection) feature is implemented by connecting a standard null-
modem cable or a modified serial cable (or “Hot Cable”) from either serial port COM1 or COM2
(CN14 or CN16) to the serial terminal or a PC with communications software. The BIOS Setup
Utility controls the serial console settings on the CM1-86DX3. Refer to the BIOS Setup for the
serial console option settings using a serial terminal or PC with communications software.
Table 4-3: User GPIO Interface Pin Signals (CN2)
Pin #
Signal
Description
1
GPIO0
User defined
2
GPIO1
User defined
3
GPIO2
User defined
4
GPIO3
User defined
5
GPIO4
User defined
6
GPIO5
User defined
7
GPIO6
User defined
8
GPIO7
User defined
9
GND
Ground
10
GND
Ground
CM1-86DX3_Oopsjump_
Standard DB9 Serial
Port Connector (Female)
Rear View
5
4
3
2
1
9
8
7
6
