Error monitoring system and method

1. An error monitoring system for transceivers, comprising:

a multiplexer;

a parity calculating circuit; and

a comparator having a first input coupled to the multiplexer and a second input coupled to the parity calculating circuit.

2. The system of claim 1 , further including an exclusive OR gate having a first input coupled to the multiplexer and a second input coupled to a scrambled parity field register.

3. The system of claim 2 , wherein the multiplexer is coupled to a plurality of registers.

4. The system of claim 3 , wherein each of the plurality of registers hold a parity field scrambler value for a communication format.

5. The system of claim 4 , wherein the multiplexer has a frame type input.

6. The system of claim 2 , wherein an output of the exclusive OR gate is coupled to an input of the comparator.

7. A method of error monitoring, comprising the steps of:

a) pre-calculating a scrambler value for a parity field;

b) exclusive ORing the scrambler value with a received scrambled parity value to form a received parity value; and

c) comparing the received parity value with a calculated parity value.

8. The method of claim 7 , wherein step (a) further includes the step of:

a1) calculating a plurality of scrambler values for the parity fields of a plurality of communication standards.

9. The method of claim 8 , wherein step (b) further includes the step of:

b1) determining a frame type;

b2) retrieving one of a plurality of scrambler value for the parity fields of a plurality of communication standards.

10. The method of claim 9 , further including the step of:

b3) determining a field location of the received scrambled parity value.

11. The method of claim 7 , wherein step (a) further includes the steps of:

a1) determining a linear feedback shift register polynomial;

a2) determining an initial value.

12. The method of claim 11 , further including the steps of:

a3) determining a location of the received parity value;

a4) calculating the scrambler value for the location.

13. The method of claim 7 , wherein step (b) further includes the steps of:

b1) receiving a frame of data;

b2) calculating the parity value for a relevant portion of the frame of data.

14. A method of error monitoring, comprising the steps of:

a) calculating an error code value for a frame of data to form a calculated error code value;

b) descrambling just an error code field of a next frame of data to form a received error code value; and

c) comparing the received error code value to the calculated error code value.

15. The method of claim 14 , wherein step (a) further includes the step of:

a1) determining a frame type;

a2) determining a coverage of the error code value.

16. The method of claim 14 , wherein step (b) further includes the steps of:

b1) determining a scrambler polynomial for a communication format;

b2) determining an initial scrambler value for the communication format.

17. The method of claim 16 , further including the step of:

b3) determining a position of the error code field in a frame for the communication format.

18. The method of claim 17 , further including the steps of:

b4) calculating an error code field scrambler value;

b5) exclusive ORing the error code field scrambler value with a scrambled error code field to form the received error code value.

19. The method of claim 14 , wherein step (b) further includes the steps of:

b1) determining a format of the frame of data;

b2) retrieving a one of a plurality of scrambler values that corresponds to the format.

20. The method of claim 19 , further including the steps of:

b3) exclusive ORing the one of the plurality of scrambler values with the error code field to form the received error code value.