CG-1280 Rev. N 09/13 - General Dynamics SATCOM Technologies

OverviewUART), CPU interface to the Ethernet controller microcontroller, the rotaryswitches S2, S3 and the dip switch S4.3) Dependent Tests – These tests require special test jigs and are run by factorypersonnel to verify operation of the system.This self-test code is only run if DIP switch S4 pos 8 is in the ON position. Toprevent against “accidentally” running these tests, the tests are also interlockedwith the Keyboard controller card. If the keyboard controller card is detected, thetests will be aborted. The serial port between the keyboard controller card and thedisplay controller card should be unplugged to allow the tests to proceed.TABLE 2-3 VCPU S3 HEX ROTARY SWITCH POSITIONS DEFINITIONS3 SWITCH POSITION0 (Factory Setting) On power-up, no self-test code is run.DESCRIPTION1 On power-up, the destructive suite of tests is run.2 On power-up, the independent suite of tests is run.3 On power-up, the dependant suite of tests is run.4 - E Unused.FOn power-up, run all tests sequentially.DIP Switch S6 – This DIP switch directly controls various hardware related boardfunctions as defined in the following table:TABLE 2-4 VCPU S6 DIP SWITCH POSITIONS DEFINITIONS6 SWITCH POSITION OFF POSITION (SWITCH OPEN) ON POSITION (SWITCH CLOSED)1 - 4 Flash Write Disabled ♦♥ Flash Write Enabled5 EEPROM Write Disabled♦ EEPROM Write Enabled6 Normal Operation♦ Hold the VCPU board in Reset7 CPU Watchdog Disable♦ CPU Watchdog Enable8 Board Reset Disabled Board Reset Enabled♦♦ Denotes the normal operating position of the switch (factory setting).♥To program the flash boot banks with new application code, S6 pos 1-4 must be in the ON position; after programming iscomplete, return these four switches to the OFF position.DIP Switch S4 – This DIP switch controls various software functions as defined inthe following table.TABLE 2-5 VCPU S4 DIP SWITCH POSITIONS DEFINITIONS4 SWITCH POSITION OFF POSITION (SWITCH OPEN) ON POSITION (SWITCH CLOSED)1 Password Protection Enabled♦ Password Protection Disabled2-6 Unused♦ Unused7 Standard Boot Up ♦ Resets all params to factory defaults on Boot8 Self Test Mode Disabled♦ Self Test Mode Enabled♠♦ Denotes the normal operating position of the switch (factory setting).♠ Enabling self-test mode should ONLY be performed when directed to do so by General Dynamics technical support. Someof the self-tests erase NVRAM (parameter storage space) and some erase all the flash banks (application firmware).2-11