LeCroy Sierra M6-2, Руководство пользователя

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334 Sierra M6 ‐ 2 SAS/SATA Protocol Analyzer User Manual
DWORD Matcher
DWORD Matcher is a DWORD pattern matcher that presents match and mask fields and a
K
‐ Code Mask field. K ‐ Codes are control characters that are always used in the first byte of
a four ‐ byte primitive. Of the K ‐ Code masks listed in the menu, D ‐ D ‐ D ‐ D is used for data
bytes, and K ‐ D ‐ D ‐ D is used for all primitives.
When you create a DWORD match, keep the following in mind:

The pattern can be inside or outside of frames (it does not matter if the pattern
is inside a frame or not).

Because the pattern can be inside or outside of frames, there is no offset.

You can make user ‐ defined primitives. (This is the reason this feature was cre ‐
ated.)

You can use any K/D pattern.
SAS Data Pattern
When you create a SAS data pattern, keep the following in mind:

The pattern must be defined inside a frame that starts with a SOF or SOAF.

The pattern must be data only (no K ‐ codes/primitives).

The pattern must be defined at a specific offset in the frame.

The pattern and mask must be specified in the same format as specified in the
SAS standard:

0x12345678 (hex)

where “1” is the first digit on the cable and is the MSB as given in the SAS Stan ‐
dard.
For example, for an SMP Request:
Pattern: 0x40000000
Mask: 0xFF000000
Offset: 0
SOF Type: SOF
SATA Data Pattern
When you create a SATA data pattern, keep the following in mind:

The pattern must be defined inside a frame that starts with a SATA_SOF.

The pattern must be data only (no K ‐ codes/primitives).

The pattern must be defined at a specific offset in the frame.

The pattern and mask must be specified in the same format as specified in the
SATA Standard.
For example, for Register H ‐ > D FIS:
Pattern: 0x00000027
Mask: 0x000000FF
Offset: 0