Maxim DS33Z41 specifications Out of Frame OOF Monitoring, Data Transfer

Models: DS33Z41

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DS33Z41 Quad IMUX Ethernet Mapper

8.9.3Out of Frame (OOF) Monitoring

Once the links are in synchronization, frame synchronization monitoring is started. The device will declare an out of frame (OOF) if 2 consecutive sequence errors are received. The device automatically adjusts for single-frame slips by increasing or decreasing the expected frame sequence number. If a frame sequence number is neither repeated nor skipped by one (indicating a single-frame slip), it is considered a sequence error. Two consecutive frames with sequence errors result in an OOF state being declared. The OOF state is used to set OOF Latched bits in GL.IMXOOFLS and an OOF command is sent to the distant end. If an OOF command is received from the distant end, the latched status register will be updated.

8.9.4Data Transfer

Once synchronization is established, data transfer is enabled by the microprocessor setting the GL.IMXCN.RXE and GL.IMXCN.SENDE bits. The user must then reset the queue pointers (GL.C1QPR) for proper data transfer. Data is byte-striped across the available links.

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Page 36
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Maxim DS33Z41 specifications Out of Frame OOF Monitoring, Data Transfer