SCSI Pod for Bus Doctor Analyzer

The SCSI 320 Pod turns the Bus Doctor into a full-featured protocol analyzer, with the depth, ease-of-use, protocol decoding and statistics needed by software and systems testers. It also provides the features needed by hardware engineers including multi-level triggering, filtering, state configuration and timing analysis of SE and LVD transfers.





SCSI 320 Displays

At the Command level, the SCSI 320 analyzer provides a big-picture view for testers who are troubleshooting system-level or application-level issues. The State display provides register-level access details for users who need to monitor SCSI 320 software, device drivers or firmware. For hardware engineers, the Timing Waveform display provides for analysis of SCSI 320 signal activity.

The analyzer allows for examining captured data at the Command, State, and Signal levels. The different display formats can be individually displayed or simultaneously displayed. When displayed simultaneously, each display can be automatically synchronized with the others, or used independently. A histogram provides a graphical summary of trace activity for the entire trace and makes it easy to point and click to any position within the trace.



SCSI 320 Capturing

The SCSI 320 analyzer provides several predefined capture configurations:

* Timing Mode - (Store all transitions)
* State Mode
o All Valid States
o Valid States with Training Sequence
o Packetized Non-Paced

Custom State Modes can also be created. You may select quick arbitration selection (QAS).

The BusDoctor's Capture Engine pushes protocol recording to new limits with the following features:

- Transitional Timestamping
- Bandwidth - 4.5 Gbytes/sec
- Depth - Stores up to 4 Gbytes
- Segmentable Trace Buffer





SCSI 320 Triggering
The SCSI Analyzer provides high-level trigger configurations for most common trigger scenarios. The high-leve user dilogs that alllow you to set triggers on a variety SCSI protocol components includings commands, messages, status, any phase, and the ITLQ nexus. You may set triggers for packetized and non-packetized environments. You may also set up customer triggering.

Triggering is used to stop the trace when a specific event or sequence of events occur. The analyzer also provides for stopping when the buffer is full, or looping endlessly until the user manually stops the trace. High-Level triggering options are provided for each bus. The User can also create custom triggers using the powerful Trigger Sequencer.





SCSI 320 Trace Filtering
The SCSI 320 Analyzer provides commonly used high-level filter configurations. Many of the high-level filters provide drop-down boxes for configuration options. Users can also create and save custom filters. After capturing, the Show/Hide control allows you to filter the contents of the trace with options for both the Command and State listings.

Pre-configured filters for each bus allow the user to conserve buffer space and reduce the stored data to those items that are of interest. Custom filters can also be created.









SCSI 320 Statistics
The Real-Time Monitor can be easily configured so you can see interesting and usable bus statistics while taking a trace or at any other time.

Dedicated hardware is provided for counting events. Software processes this data providing simple, or ratios of events per time or other events such as Transfers per Second, Transfers per Command, or Data Transfers per Error. These ratios are shown as Current Values and Peak Values, providing a summary of the changes over time.



Protocols, Standards, & Speed

Protocols & Standards:

* SCSI-I, SCSI-II, SCSI-III, SCSI-IV
* CAM-3, SPI-4, MMC-3, SPC-2, SGC, SCC-2
* QAS, Packetized
Speeds:
* SE: Async, Sync through 40MB/sec
* LVD: Async, Sync through 320MB/sec *
*Timing mode may not be available for transfers at 320MB/s

The analyzer decodes many of the high-level protocols that are transmitted on each bus. The Command Listing is typically used for displaying high-level protocols which may be transferred across a bus, while the State Listing typically displays native, low-level protocols.



Since 1997, Gillaspy Associates has built a solid reputation for developing strong relationships with our customers by providing quality solutions and ongoing support.