Pin list description guidelines for the QUIET Electronics Box Modules


Mircea Bogdan 
5/12/05


1. For each module in the QUIET Electronics Box (QEB), the P1/P2 pin lists/tables shall include:

1.1. Name of module.
1.2. Number of such modules in QEB.
1.3. Preferred position (slot number)  in QEB, if any.
1.4. Two listings (one for P1 and one for P2) with all the pins included. 
Pins that are not used and not connected shall be noted as such.


2. The information for each pin shall include:

2.1. Pin Number (as specified in the module design guidelines) and Pin Name.

2.2. Type of signal: analog/digital, power, etc.
2.2.1. If digital: level (LVDS, TTL, PECL, etc.) and frequency.
2.2.2. If analog: excursion, frequency, approx. input/output impedance.
2.2.3. If power: value, analog/digital, galvanic isolated (floating) or not,
ripple, etc. - all the specs required to choose the respective power supply.

2.3. Where the signal is coming from/going to; if not known yet, put:"TBD".
2.3.1.  If input: what generates the signal and what leads the signal to module
(flex, backplane, wires, etc.).
2.3.2. If output: what is the final destination and what leads the signal there
(flex, backplane, wires, etc.).
2.3.3. If power/ground: where is it coming from. E.g. from common backplane
power/ground, from outside QEB power supply via wires direct to connectors or
via wires and backplane traces, etc.

2.4. Any other information the designer believes relevant for proper system
integration.


Example of pin list/table (These named signals may not really exist.)


Connector Pi.
======================================================================================================
Pin #        Pin Name        Observations
======================================================================================================
C4           MyOut1+         MyOut1,...,k are diff. analog output lines, going to the ADC boards via: 
B4           MyOut1-         QEB backplane connector, Small Aux Board, twisted pair ribbon cable, 
..........................          hermetic connector and cable outside QEB.
C9           MyOutk+         They are about 5mVpp with 300mV offset, 4kHz, sq wave.
B9           MyOutk-
------------------------------------------------------------------------------------------------------
B5           aground         Analog ground lines - go along with Out1,...,7.
C5           aground
------------------------------------------------------------------------------------------------------
A30          MS7             My Signal 7, TTL, 11.97KHz, from Module_X inside QEB, via backplane.
------------------------------------------------------------------------------------------------------
A11          V1              +7.65 V floating power, linear regulated with 3fVpp ripple, etc.
A12          V1r             +7.65 V floating power return line
------------------------------------------------------------------------------------------------------
D1,D2,       GND             digital ground
D3,D4,D5,
......
D31,D32
-------------------------------------------------------------------------------------------------------
B1,B2,B3,                    unused
B4,B5,B6,
.........
B31,B32
-------------------------------------------------------------------------------------------------------