USB Pod for Bus Doctor Analyzer

The USB 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 supports Low, Full and High speeds (USB 1.1 and 2.0) and has a special Chirp mode for viewing the chirp handshaking activity. It also provides the features needed by hardware engineers including multi-level triggering, filtering, state configuration and timing analysis of USB transfers.





USB 1.1 & 2.0 Displays
It provides displays at the command level, state level, and signal level, and decodes the Bulk Storage, UFI and ATAPI protocol classes, with additional class decodings under development. At the Transaction level, the USB analyzer provides a big-picture view for testers who are trouble-shooting system level or application level issues. The State display provides word-level access details for users who need to monitor USB software, device drivers or firmware. For hardware engineers, the Timing Waveform display provides for analysis of USB signal activity. It includes LEDs to display current capture speed and detected errors, and is able to tap into a USB bus without adding cables to the system.

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.



USB 1.1 & 2.0 Capturing
The USB analyzer provides 4 predefined capture configurations:

1. Timing Mode (Store all transitions)
2. State Mode - Packet Transfers (Default)
3. State Mode - Chirp Only
4. State Mode - Chirp and Packet Transfers

Custom State Modes can also be created.

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





USB 1.1 & 2.0 Triggering
The USB Analyzer provides high-level trigger configurations for most common trigger scenarios. The high-level triggers provide drop-down boxes that enable the user to select specific commands, addresses, endpoints, etc from a list without memorizing codes or positions. Users can also create and save custom triggers.

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.





USB 1.1 & 2.0 Trace Filtering
The USB 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.

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.









USB 1.1 & 2.0 Statistics
The Real-Time Monitor is pre-configured for certain common statistical measurements, but can be easily reconfigured by the user for almost any type of measurement desired.

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:
* USB 1.1 & 2.0
* Bulk Commands
* ATAPI Commands

Speeds:
* 1.5Mb/sec (Low-speed)
* 12Mb/sec (Full-speed)
* 480Mb/sec (High-speed)

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.