Owner's manual

MCNConfig Program: Master-Sub Comparator Configuration

103 68-11824-210

Multi-Bit Mask

There may be times in which you need multiple bits from a master device to be passed to a sub device.

The following table illustrates how to do this.

If, for example, you wanted to pass the "Rx" and the "Vote" bits from the Master comparator to the Sub

Comparator, you would set the mask as shown:

Master Bits Steer Rx Dis Vote Fail

Mask 0 1 0 1 0

Masked Rx Vote

Compressed

& Shifted

Rx Vote

Nudged (5) Master

Master

Vote

Sub

Comparator

Bits

Master

Vote

Steer Rx Dis Vote Fail

For Multi-Bit Master-Sub Comparator, the MCNRCD program processes the bits from the Master

comparator as shown above:

1. Both the "Rx" and "Vote bits have a "1" bit set.

2. The "Rx" & "Vote" bits are compressed (unused bits are deleted) and shifted to the right to fill the

Least Significant Bits (right hand bits)

3. The Compressed & Shifted Bits will be nudged to the left by the number specified in the "Nudge"

field. (5 in this case)

4. The Nudged bits are passed to all the receivers in the Sub Comparators.

(Note that this is just an example of what could be done with multiple bits to show how multiple bits are

handled.)

Inherited bits

"Native" bits from Sub Comparator CIB