Jumper Description; Comb (Rs-422) Termination Jumper Settings (Jp1 And Jp2); Uefi Bios Configuration Jumper Settings (Jp3 And Jp4); Jp1 Jumper Setting For Rs-422 Rxd Termination (Comb) - Kontron CP3002-RC User Manual

CP3002-RC/CP3002-RA
4. Configuration
4.1

Jumper Description

The CP3002-RC/CP3002-RA has four jumpers JP1, JP2, JP3 and JP4. JP1 and JP2 are used
to activate the bus termination for COMB (RS-422). JP3 is used for clearing the uEFI BIOS boot
settings. JP4 is used for uEFI BIOS boot configuration. For the location of the jumpers, refer to
Figure 1-4.
4.1.1

COMB (RS-422) Termination Jumper Settings (JP1 and JP2)

When COMB is used and is the last device on the RS-422 bus, then the RS-422 interface must
provide termination resistance. The purpose of the jumpers JP1 and JP2 is to enable this line
termination resistor (120 ohm).
Table 4-1:

JP1 Jumper Setting for RS-422 RXD Termination (COMB)

JP1
Open
Closed
The default setting is indicated by using italic bold.
Table 4-2:

JP2 Jumper Setting for RS-422 TXD Termination (COMB)

JP2
Open
Closed
The default setting is indicated by using italic bold.
4.1.2

uEFI BIOS Configuration Jumper Settings (JP3 and JP4)

Table 4-3:

uEFI BIOS Boot Settings Jumper (JP3)

JP3
Open
Closed
The default setting is indicated by using italic bold.
To clear the uEFI BIOS settings, proceed as follows:
1. Close jumper JP3.
2. Apply power to the system.
3. After successful boot from uEFI BIOS, remove power from the system.
4. Open jumper JP3.
Table 4-4:

uEFI BIOS Boot Configuration Jumper (JP4)

JP4
Open
Closed
ID 1039-3625, Rev. 1.0
RXD termination inactive
RXD termination active (soldered jumper or 0 ohm resistor in 0805 package)
TXD termination inactive
TXD termination active (soldered jumper or 0 ohm resistor in 0805 package)
Boot using the currently saved uEFI BIOS settings
Clear the uEFI BIOS settings and use the default values
Boot from default SPI Flash
Boot from the alternative SPI Flash
Configuration
DESCRIPTION
DESCRIPTION
DESCRIPTION
DESCRIPTION
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