Seagate Fibre Channel Interface User Manual

Page 31

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Fibre Channel Interface Manual, Rev. D

17

Seagate disc drives use only those listed in bold type (Seagate Fibre Channel disc drives are Class 3 devices
and use only Class 3 delimiters).

Notes.

1. EOF primitives come in two forms—one is used when the beginning running disparity is positive and the

other is used if the beginning running disparity is negative. Regardless of which form is used, each EOF
delimiter is defined so that negative current running disparity results after processing the final (rightmost)
character of the ordered set.

2. Ordered sets associated with SOF delimiters, primitive signals, and primitive sequences are always trans-

mitted with negative beginning running disparity. As a result, primitive signals, primitive sequences, and
SOF delimiters are only defined for the negative beginning running disparity case.

3. Frames that end with any other EOF type are discarded by the drive.

Table 4:

Frame delimiters

Delimiter function

Delimiter

Beginning
running
disparity

Ordered set (FC-1)

Ordered set (hex)

SOF Connect Class 1

SOFc1

Negative

K28.5 D21.5 D23.0 D23.0

BC B5 17 17

SOF Initiate Class 1

SOFi1

Negative

K28.5 D21.5 D23.2 D23.2

BC B5 57 57

SOF Normal Class 1

SOFn1

Negative

K28.5 D21.5 D23.1 D23.1

BC B5 37 37

SOF Initiate Class 2

SOFi2

Negative

K28.5 D21.5 D21.2 D21.2

BC B5 55 55

SOF Normal Class 2

SOFn2

Negative

K28.5 D21.5 D21.1 D21.1

BC B5 35 35

SOF Initiate Class 3

SOFi3

Negative

K28.5 D21.5 D22.2 D22.2

BC B5 56 56

SOF Normal Class 3

SOFn3

Negative

K28.5 D21.5 D22.1 D22.1

BC B5 36 36

SOF Initialize Loop

SOFil

Negative

K28.5 D21.5 D22.2 D22.2

BC B5 56 56

SOF Activate Class 4

SOFc4

Negative

K28.5 D21.5 D25.0 D25.0

BC B5 19 19

SOF Initiate Class 4

SOFi4

Negative

K28.5 D21.5 D25.2 D25.2

BC B5 59 59

SOF Normal Class 4

SOFn4

Negative

K28.5 D21.5 D25.1 D25.1

BC B5 39 39

SOF Fabric

SOFf

Negative

K28.5 D21.5 D24.2 D24.2

BC B5 58 58

EOF Terminate

EOFt

Negative
Positive

K28.5 D21.4 D21.3 D21.3
K28.5 D21.5 D21.3 D21.3

BC 95 75 75
BC B5 75 75

EOF Disconnect-

Terminate

EOFdt

Negative
Positive

K28.5 D21.4 D21.4 D21.4
K28.5 D21.5 D21.4 D21.4

BC 95 95 95
BC B5 95 95

EOF Abort

EOFa

Negative
Positive

K28.5 D21.4 D21.7 D21.7
K28.5 D21.5 D21.7 D21.7

BC 95 F5 F5
BC B5 F5 F5

EOF Normal

EOFn

Negative
Positive

K28.5 D21.4 D21.6 D21.6
K28.5 D21.5 D21.6 D21.6

BC 95 D5 D5
BC B5 D5 D5

EOF Disconnect-

Terminate-Invalid

EOFdti

Negative
Positive

K28.5 D10.4 D21.4 D21.4
K28.5 D10.5 D21.4 D21.4

BC 8A 95 95
BC AA 95 95

EOF Normal-Invalid

EOFni

Negative
Positive

K28.5 D10.4 D21.6 D21.6
K28.5 D10.5 D21.6 D21.6

BC 8A D5 D5
BC AA D5 D5

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