USB-IF Compliance Updates

Number of Updates: 2

Table of Contents
ID Updated Subject Reason Mandate Effective Date
11 February, 2008 Interoperability Gold-tree Update Candidate Gold-tree Definition Informational n/a

12 November, 2007 Windows Vista USB Certification Status Informational n/a

Interoperability Gold-tree Update
Mandate: Informational
Effective Date: n/a

The USB-IF uses a tree of known, good, USB devices to verify interoperability and functionality of a USB device. This tree is referred to as the Gold-tree. The description of the gold-tree and the test procedure is found in the document "USB-IF Full and Low Speed Electrical and Interoperability Compliance Test Procedure."

The gold-tree consists of USB-IF certified, off-the-shelf, consumer devices that are widely available. Unfortunately, the shelf-life of consumer products is limited and some items become difficult to find as time goes by.   Thus, USB-IF is in the process of updating the old gold-tree. Below is the current revision of a candidate gold-tree. Until it becomes official, some devices may change. However, this version seems to be stable and worked flawlessly at the April 2007 compliance workshop.

This update defines acceptable substitutions for the current gold-tree. 

Gold-tree Device List

Item Description/Model TID Qty
USB Host System Intel D945GCZ motherboard, Pentium D, 1GB RAM, CD/DVD Drive
OR
Intel DG965SS motherboard, Pentium D, 1GB RAM, CD/DVD Drive
  1
EHCI / OHCI Adaptec, model AUA 4000 PCI adapter
(NEC host controller µPD720101, TID:80000026)
OR
ADS Tech USB Turbo 2.0, model USBX-2000
(NEC host controller µPD720101, TID:80000026)

51000237

53000205

1
HS Hub (Self-powered) Belkin F5U233
(SMSC hub controller USB2504, TID:30000553)
20000008 6

FS Hub (bus-powered) with
integrated USB Keyboard

Targus Numeric Keypad with 2-port Hub, model PAUK10U 10004001 1
USB mouse Microsoft Basic Optical Mouse 10001150 1
HS Mass Storage Memorex TravelDrive model 32509051 11000412 1
HS Mass Storage SanDisk Cruzer Micro model SDCZ4-512 10002185 1
PC Camera Logitech QuickCam Ultra Vision  P/N: 961471-0403 10530144 1
average current draw test jig [test fixture acquired through USB-IF, Inc.]   1
one meter USB cables any listed on USB-IF Cables and Connectors Integrators List   3
five meter USB cables any listed on USB-IF Cables and Connectors Integrators List   8


Topology Chart



Tier Device
1 ·   Hub FS1 - Bus-powered Hub with embedded keyboard
2       ·   Hub FS2 - Self-powered Hub on port 1 of USB Keyboard
2             ·   Mass Storage Drive 2 on port 1 of Hub FS2
1 ·   Hub HS1 - Self-powered Hub
2       ·   Hub HS2 - Self-powered Hub on port 1 of hub HS1
3             ·   Hub HS3 - Self-powered Hub on port 4 of hub HS2
4                   ·   Hub HS4 - Self-powered Hub on port 3 of hub HS3
5                         ·   Hub HS5 - Self-powered Hub on port 3 of hub HS4
5                               ·   Mass Storage Drive 1 on port 1 of hub HS5
5                               ·   Mouse on port 2 of hub HS5 
5                               ·   WebCam on port 4 of hub HS5

Notes:

Devices that are both self-powered and bus-powered must be tested using bus-power.

Self-powered devices must be checked for bus powered operation. Self-powered devices that are capable of operating on bus power must be tested in that configuration.

Hubs:

When testing hubs, attach them to the highest operational tier level. Typically, that will be tier level 4. If the HUT contains an embedded hub, then attach to tier level 3. Move gold tree devices to any exposed downstream ports on the HUT.
Hubs with no embedded devices:
·   Run USBCV chap 9 and 11 on the hub
·   Run interoperability with gold device(s) attached.
Hubs with embedded devices (compound):
·  Run USBCV on the hub and each embedded device
·  Run interoperability run on all embedded devices
Isochronous Devices:
·  High-speed isochronous DUTs are simply added to the tree. They no longer replace the camera.

Test Attachment Points

Attachment Notes:

  • All Belkin F5U233 hubs are self-powered
  • The DUT is not permitted to be tested on the top port of the Belkin F5U233 hubs.
  • On Hub HS5, place the Mass Storage drive 1 on the top port, the DUT, mouse and WebCam to the rear ports.
  • Low-power devices are to be tested on the bus-powered Keyboard Hub FS1
  • High-power devices are to be tested on the bus-powered Hub FS1 (enumeration only) and self-powered Hub FS2
Test Procedures

The test procedures for using the candidate gold-tree may be used.  Please download the GoldSuite Test Procedure.

Vendors are encouraged to test their devices against a variety of hosts and peripherals and not to rely solely on the USB-IF Gold-tree for validation.

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Windows Vista
Mandate: Informational
Effective Date: n/a
The USB compliance plan based on Microsoft Windows Vista is still under development. The USB-IF currently offers certification based on the Microsoft Windows XP operating system only.

Enumeration and functionality of all USB peripherals under Windows XP is mandatory. If Windows Vista is required for demonstrated operation of the peripheral, Windows Vista may be used for that purpose.
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