SYSTEM AND METHOD FOR SERIALIZED COMMUNICATION
A method for serializing communications in the computing field includes serializing input data into a serialized stream of symbols, based on one or more encodings, at a serializer, each symbol including a disparity code selected based on a running disparity (RD) of the serialized stream of symbols. The running disparity (RD) is tracked by setting the RD to an initial value, and then adding a disparity of each symbol to the RD to ensure the RD does not exceed a desired maximum, e.g., three. A positive disparity encoding or a negative disparity encoding of each symbol is selected for transmission based on the RD. The serialized data stream of symbols is transmitted along a data conduit, to a deserializer, in which the serialized data stream of symbols is deserialized to determine a corresponding bit value, for outputting decoded information in parallel form.
1 . A method comprising:
serializing input data into a serialized stream of symbols, based on one or more encoding definitions, at a serializer, each symbol including a disparity code selected based on a running disparity (RD) of the serialized stream of symbols;
tracking the RD by setting the RD to an initial value, and then adding a disparity of each symbol to the RD;
selecting a positive disparity encoding or a negative disparity encoding of each symbol based on the RD;
transmitting the serialized data stream of symbols, along a data conduit, to a deserializer;
deserializing the serialized data stream of symbols at the deserializer to determine a corresponding bit value, and outputting decoded information in parallel form; and
performing error detection at the deserializer comprising tracking the RD at the deserializer and detecting deviations from expected behavior.
2 . The method according to claim 1 , wherein detecting deviations from the expected behavior comprises detecting the RD exceeding a maximum magnitude.
3 . The method according to claim 1 , wherein detecting deviations from the expected behavior comprises detecting received symbol having a disparity with a same sign as a current RD.
4 . The method according to claim 1 , further comprising signaling the serializer from the deserializer that one or more symbols of the data should be re-transmitted when an error is detected.
5 . The method according to claim 1 , further comprising transmitting a control symbol at a start of one or more transmission blocks, the control symbol enables the deserializer to determine an appropriate alignment of symbols in the serialized data stream.
6 . The method according to claim 1 , wherein performing error detection also comprises detecting invalid symbols not included in the one or more encoding definitions.
7 . The method according to claim 1 , wherein performing error detection also comprises detecting invalid symbols which violate rules of the one or more encoding definitions.
8 . The method according to claim 7 , wherein the symbols which violate rules comprise symbols with more than 3 CIB at their start or end.
9 . The method according to claim 1 , wherein each symbol comprises a 3-bit BOOK code, a 5-bit INDEX code, and the disparity code.
10 . The method according to claim 9 , wherein all 0 bits of the negative disparity encoding are 1 bits in the positive disparity encoding, and all the 1 bits in the negative disparity encoding are 0 bits in the positive disparity encoding.
11 . The method according to claim 1 , wherein the RD has a maximum magnitude no greater than 3 bits.
12 . A system comprising:
a serializer configured to serialize input data into a serialized stream of symbols, based on one or more encoding definitions, each symbol including a disparity code selected based on a running disparity of the serialized stream of symbols; track the running disparity (RD) by setting the RD to an initial value, and then adding a disparity of each symbol to the RD; and select a positive disparity encoding or a negative disparity encoding of each symbol based on the RD;
a deserializer configured to deserialize the serialized stream of symbols received from the serializer based on the one or more encodings to determine a corresponding bit value, to perform error detection, and output decoded information in parallel form; and
a data conduit communicatively coupling the serializer to the deserializer;
wherein performing error detection comprises tracking the RD at the deserializer and detecting deviations from expected behavior.
13 . The system according to claim 12 , wherein detecting deviation from the expected behavior comprises detecting the RD exceeding a maximum magnitude.
14 . The system according to claim 12 , wherein detecting deviation from the expected behavior comprises detecting received symbol having a disparity with a same sign as a current RD.
15 . The system according to claim 12 , wherein when an error is detected, the deserializer is configured to signal the serializer that one or more symbols or blocks of the data should be re-transmitted.
16 . The system according to claim 12 , wherein the serializer is further configured to transmit a control symbol at a start of one or more transmission blocks, the control symbol enables the deserializer to determine an appropriate alignment of symbols in the serialized data stream.
17 . The system according to claim 12 , wherein performing error detection comprises the deserializer detecting invalid symbols, selected from the group consisting of: symbols not included in the encoding definition, and symbols which violate rules of the encoding definition.
18 . The system according to claim 17 , wherein the symbols which violet rules comprise symbols with more than 3 CIB at a start or an end.
19 . The system according to claim 12 , wherein each symbol comprises a 3-bit BOOK code, a 5-bit INDEX code, and a disparity bit code.
20 . The system according to claim 12 , wherein the RD has a maximum magnitude no greater than 3 bits.