UMAC-CPCI Turbo CPU Board Hardware Reference Manual
12
Jumper Descriptions
E3: Re-Initialization on Reset Control
E Point &
Physical Layout
Location Description Default
Remove jumper for normal reset mode (default).
Jump pins 1 to 2 for re-initialization on reset.
No jumper
installed
E4: (Reserved for Future Use)
E Point &
Physical Layout
Location Description Default
No
jumper
installed
E5: USB/Ethernet Communication Jumper
E Point &
Physical Layout
Location Description Default
Jump 1-2 for Ethernet or USB communications from J7 (Ethernet
connector) or J3 (USB connector).
Jump 2-3 for Ethernet or USB communications through the back
J2 connector
Factory
installed
E11: Power Supply Check Control
E Point &
Physical Layout
Location Description Default
E11:
Jump E11 pin 1 to 2 to include the +12V and –12V analog
supplies from the J1 backplane connector in the power-supply
check circuit, inhibiting outputs if these supplies fail.
Remove E11 jumper so only 5V digital supply is used in power-
supply check circuit.
No jumper
installed
E17 – E18: Serial Port Select
E Point &
Physical Layout
Location Description Default
E17:
Jump E17 pin 1 to 2 to select RS-232 serial data input for main
serial port (J4 front-panel or J2 backside connector).
Jump E17 pin 2 to 3 to select RS-422 serial data input for main
serial port (J4 front-panel or J2 backside connector).
Pins 1-2
jumpered
E18:
Jump E18 pin 1 to 2 to select RS-232 serial handshake input for
main serial port (J2 backside connector only).
Jump E18 pin 2 to 3 to select RS-422 serial handshake input f for
main serial port (J2 backside connector only).
Pins 1-2
jumpered
