Fujitsu MAA3182FC Series, Manual

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C141-E054-02EN 1 - 4
1.1.5 Encoding & Decoding
On FC-AL, the data is encoded prior to transmission and should be decoded when receiving.
The 10-bit character consists of 1,024 data space with 13-bit data mapped 1 control character.
This method is called 8B/10B encoding.
And to prevent too many same signal (ones or zeros), 10-bit character has an option to balance
total numbers of ones or zeros.
This balancing is called “running disparity”.
1.1.6 Buffer-to-buffer frame transfer
As shown in Figure 1.3, data transmission occurs from an output buffer in the node part to an
input buffer in the node port.
The basic unit of buffer-to-buffer transfer is the frame.
Figure 1.3 Buffer to Buffer Data Transfer