Delta Tau COMPACT UMAC 用户手册
UMAC-CPCI Turbo CPU Board Hardware Reference Manual
E18A, B, C, D: Ethernet Communication Control
E Point and
Physical Layout
Location Description
Default
E18D
1
E18C
1
E18B
1
E18A
1
Jump 1 to 2 to Ethernet Connection to J7 front connector
Jump 2-3 for Ethernet connection through back J2 connector
Jump 2-3 for Ethernet connection through back J2 connector
Pins 1-2 jumpered
E19: Watchdog Disable Jumper
E Point and
Physical Layout
Location Description
Default
Jump pin 1 to 2 to disable Watchdog timer (for test purposes
only.).
Remove jumper to enable Watchdog timer.
only.).
Remove jumper to enable Watchdog timer.
No jumper installed
E20 – E22: Power-Up/Reset Load Source
E Point and
Physical Layout
Location Description
Default
E20:
To load active memory from flash IC on power-up/reset,
Remove jumper E20;
Jump E21 pin 1 to 2;
Jump E22 pin 1 to 2.
Other combinations are for factory use only; the board will not
operate in any other configuration.
Remove jumper E20;
Jump E21 pin 1 to 2;
Jump E22 pin 1 to 2.
Other combinations are for factory use only; the board will not
operate in any other configuration.
No E20 jumper
installed
installed
E21 and E22 jump pin
1 to 2
1 to 2
E23: Firmware Reload Enable
E Point and
Physical Layout
Location Description
Default
Jump pin 1 to 2 to reload firmware through serial or host bus port.
Remove jumper for normal operations.
No jumper installed
E25A, B, C: Flash Memory Firmware Bank Select
E Point and
Physical Layout
Location Description
Default
Remove all jumpers to select standard factory-installed bank of
operational firmware.
Install one or more jumper(s) to select alternate bank of operation
firmware to install (E23 ON) or use (E23 OFF).
operational firmware.
Install one or more jumper(s) to select alternate bank of operation
firmware to install (E23 ON) or use (E23 OFF).
No jumpers installed
Jumper Descriptions
13