4/24/2001 Question What type connectors ECC, they placed ECC, wha

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4/24/2001 Question What type connectors ECC, they placed ECC, wha

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Aeroflex UTMC Application Note
4/24/2001
Question What type connectors ECC, they placed ECC, what their pinouts? Answer connectors D-type. Looking with connectors side board, silk screen print right side connectors board follows: resides middle right edge ECC. resides bottom left edge ECC. resides middle left edge ECC. resides right edge ECC. resides left edge ECC. resides bottom right edge ECC. connector functions defined below: 44-pin female D-type connector which contains discrete output signals. 78-pin female D-type connector which contains analog inputs with matching analog ground reference each analog input. 9-pin female D-type connector which contains interface signals RS-232 debug port. 9-pin male D-type connector which contains differential RS-485 signals used both channels MIL-STD-1553 1Mbps serial communications port. 15-pin female D-type connector which contains +5V, -5V, Ground supply inputs ECC. 25-pin male D-type connector which contains four multiplexed RS-422 TTL) serial ports, pulse width modulated output, high-speed capture input, subsystem fail signal. specific signal pinouts located UT131 User's Manual. Question What does memory look like ECC? Answer memory located UT131 User's Manual. user's consideration, memory roughly broken into three pages: user instruction page addresses 0400h through FFFFh. general purpose data memory page with EDAC addresses 0800h through FFFFh. MIL-STD-1553 memory page addresses 0800h through 3FFFh.
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Question ECCs available with EEPROM user instruction memory flight? Answer flight version ECCs UT28F256 anti-fuse PROM. users should develop their applications code development board, submit final flight code with UT131 flight order flight ready board will delivered customer with flight code programmed into anti-fuse PROMs. Question What required supply voltages currents? Answer UT131 requires: supply capable supplying 500mA current. supply capable supplying 50mA current. Note: positive supply current vary depending serial communication frequency duty cycle, type termination desired serial communication busses. Question What user provisions available with current design? Answer UT131 designed provide much customer design flexibility possible limited maximum board size. These provisions intended provide much immediate option selection possible customers without having venture into customization NRE. following provisions currently available with UT131 ECC: Multiplexed Serial COM: User selectable RS-422 serial interface TTL. using RS-422, user defines desired parallel termination resistor value. using drive, user define series parallel termination resistor value. user define both series parallel resistor provide voltage division mechanism interfacing 3.3V only subsystem component.
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MIL-STD-1553 Serial Bus: user select among none, series, parallel, thevenin, termination techniques. each circumstance, user should define passive termination values. RS-232 Debug Port: user select have RS-232 debug port available with flight ready ECC. users select have debug port available flight board, they also request have active times, only when board connected Note: UTMC willing entertain customization requests from customers. design stone, intended easily customizable beyond current provision offering. example would replace MIL-STD-1553 physical interface from RS-485 actual MIL-STD-1553 physical interfaced defined MIL-STD-1553 specification. Question What space qualification level components ECC? Answer components qualified Mil-Std-883B level, except 8251A USART that used RS-232 debug port. desired customer, this component removed from flight version ECC. Additionally, specified survive total ionizing dose kRADs silicon. larger dose requirement necessary, UTMC identify alternate components support customer's radiation requirement. Please Table UT131 User's Manual list radiation characteristics components ECC. Question electrical, mechanical, thermal interfaces controlled? Answer Yes, current version UT131 been laid built. provisional changes will affect mechanical, thermal characteristics board. only place that user option cause electrical differences termination technique used serial data busses. other customization would result large enough change ECCs characteristics that UTMC would have requalify board, define electrical, mechanical thermal changes resulting from customization. Question 10:) Does provide watchdog time-out function recover from software crashes? Answer 10:)
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Yes, UT80CRH196KD microcontroller includes 16-bit programmable watchdog timer recover board software crash occurs. UTMC also suggests that have unused instruction memory filled with FFh. Therefore, case that program counter starts reading instructions that defined users application code, board will reset. Question 11:) What UT131 ECC's first scheduled flight opportunity? Answer 11:) UT131 scheduled September 1999 Falcon Gold Program from United States Force Academy!!! January 1999 edition Times article about Force Academy Falcon Program ECC.
4/24/2001
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4/24/2001 Question What type connectors ECC, they placed ECC, wha

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