XFP transceiver with 8.5G CDR bypass
First Claim
Patent Images
1. A transceiver module, comprising:
- a TOSA;
a ROSA;
receiver eye opener circuitry including a first input configured to receive a first serial electrical data stream from the ROSA, and further including a first output through which the first serial electrical data stream passes, the first serial electrical data stream having a jitter value that is lower at the first output than at the first input;
transmitter eye opener circuitry including a second input configured to receive a second serial electrical data stream, and further including a second output through which the second serial electrical data stream passes to the TOSA, the second serial electrical data stream having a jitter value that is lower at the second output than at the second input; and
bypass circuitry configured so that at least one of the serial electrical data streams bypasses corresponding eye opener circuitry when the at least one serial electrical data stream has a data rate less than about 10 Gb/s.
5 Assignments
0 Petitions
Accused Products
Abstract
This disclosure concerns transceivers that include CDR bypass functionality. In one example, a 10 G XFP transceiver module includes integrated CDR functionality for reducing jitter. The 10 G XFP transceiver module also implements CDR bypass functionality so that the CDR can be bypassed at rate less than about 10 Gb/s, such as the Fibre Channel 8.5 Gb/s rate for example.
180 Citations
15 Claims
-
1. A transceiver module, comprising:
-
a TOSA;
a ROSA;
receiver eye opener circuitry including a first input configured to receive a first serial electrical data stream from the ROSA, and further including a first output through which the first serial electrical data stream passes, the first serial electrical data stream having a jitter value that is lower at the first output than at the first input;
transmitter eye opener circuitry including a second input configured to receive a second serial electrical data stream, and further including a second output through which the second serial electrical data stream passes to the TOSA, the second serial electrical data stream having a jitter value that is lower at the second output than at the second input; and
bypass circuitry configured so that at least one of the serial electrical data streams bypasses corresponding eye opener circuitry when the at least one serial electrical data stream has a data rate less than about 10 Gb/s. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A transceiver module, comprising:
a plurality of components that are substantially compliant with the XFP MSA and are compatible for use in a Fibre Channel system, the plurality of components including;
a TOSA;
a ROSA;
receiver eye opener circuitry including a first input configured to receive a first serial electrical data stream from the ROSA, and further including a first output through which the first serial electrical data stream passes, the first serial electrical data stream having a jitter value that is lower at the first output than at the first input;
transmitter eye opener circuitry including a second input configured to receive a second serial electrical data stream, and further including a second output through which the second serial electrical data stream passes to the TOSA, the second serial electrical data stream having a jitter value that is lower at the second output than at the second input; and
bypass circuitry configured so that at least one of the serial electrical data streams bypasses corresponding eye opener circuitry when the at least one serial electrical data stream has a data rate of about 8.5 Gb/s. - View Dependent Claims (12, 13, 14, 15)
Specification