Altera SerialLite II Protocol - Manual (Page 11)

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SerialLite II Protocol Reference Manual
SerialLite II Specification
Physical Layer
The Physical layer defines 8B/10B symbols for converting 8-bit user data
characters from the Data Link layer to 10-bit data symbols, as well as
control symbols and idle symbols for inter-packet fill. The Physical layer
also specifies the bit transmission order, and serial-to-parallel and
parallel-to-serial conversion.
Figure 2–3 shows an example of the
Physical layer connection.
Figure 2–3. Physical Layer Definition
Transmit Direction
■ Serialization of data
■ 8B/10B encoding
■ Link initialization
■ Insertion of clock compensation characters for asynchronous
applications
■ Idle character conversion
■ Payload and idle scrambling
Receive Direction
■ Clock recovery
■ Deserialization of data
■ Character alignment using a comma control symbol
■ 8B/10B decoding
■ Link initialization
■ Lane alignment (for multiple lanes)
■ Check for running disparity error and invalid character error
■ Clock tolerance compensation for asynchronous applications
■ Payload and idle descrambling
PHY PHY
Link Port
Lane