USB-IF Compliance Updates

Number of Updates: 8

Table of Contents
ID Updated Subject Reason Mandate Effective Date
121 February, 2019 USB-C(tm) Hubs without PD must run Bridge Class CV tests Bridge Class failures are warning when run on USB-C(tm) Hubs without PD Required February, 2019

114 January, 2019 Testing Flip-Ability of USB Type-C Products Clarification for USB Type-C Flip-Ability Testing Required June, 2017

102 January, 2019 Proprietary Charging Methods over USB Type-C is Prohibited Enforcement of Section 4.8.2 of the USB Type-C Specification Required July, 2016

106 January, 2019 Certified Connectors Required for Products Using the USB Type-C Connector Silicon and End-products must use certified connectors Required August, 2016

104 January, 2019 USB Type-C Functional Testing All products implementing USB Type-C are required to pass USB Type-C Funcional Tests Required August, 2016

119 January, 2019 USB Car Charger Certification Requirements Address hole in car charger certificaiton Required July, 2018

118 January, 2019 USB Type-C ECN BC 1.2 Clarification Engineering Change Notice Required June, 2018

108 January, 2019 Gen 1 USB Type-C to USB Type-C must use an Emarker Gen 1 USB Type-C to USB Type-C must use an Emarker as stated in Table 3-1 of the USB Type-C Specification Required January, 2017

Proprietary Charging Methods over USB Type-C is Prohibited
Mandate: Required
Effective Date: July, 2016
As stated in section 4.8.2 of the USB Type-C specification, products implementing proprietary charging methods may not modify VBus voltage outside the VBus ranges defined in the USB 2.0 and USB 3.1 specification. Products that violate section 4.8.2 of the USB Type-C specification are not eligible for certification. Section 4.8.2 of the USB Type-C specification is restated below.

4.8.2 Non-USB Charging Methods

A product (Source and/or Sink) with a USB Type-C connector shall only employ signaling

methods defined in USB specifications to negotiate power over its USB Type-C connector(s).

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USB Type-C Functional Testing
Mandate: Required
Effective Date: August, 2016

Effective immediately all products implementing USB Type-C are required to be tested against the following test solutions which test against the USB Type-C functional test plan. A product must meet this requirement in addition to existing compliance requirements applicable to the product under test.

  • Ellisys Type-C Functional Tests
  • LeCroy Type-C Functional Tests
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Certified Connectors Required for Products Using the USB Type-C Connector
Mandate: Required
Effective Date: August, 2016

All products implementing a USB Type-C connector must use certified USB connectors.

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Gen 1 USB Type-C to USB Type-C must use an Emarker
Mandate: Required
Effective Date: January, 2017

Table 3-1 of the USB Type-C Specification states that a Gen 1 USB Type-C  to USB Type-C cable must implement an Emarker. The initial certifications of Gen 1 USB Type-C to USB Type-C did not require Emarkers as Emarkers were not readily available in the market place. Now that Emarkers are readily available, the USB-IF is enforcing the requirement that Gen 1 USB Type-C to USB Type-C cables must implement an Emarker.

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Testing Flip-Ability of USB Type-C Products
Mandate: Required
Effective Date: June, 2017

It is required that all USB Type-C products be tested in all orientations. There are specific test cases that do not require a USB Type-C products to be tested in both orientations. When testing USB Type-C products against the USB Command Verifier test tools, the tester is allowed to randomly pick an orientation to run the tests. It is recommended that the tester switch to a different orientation between test cases. For example a tester may test chapter 9 tests in Orientation 1 and then test MSC tests in Orientation 2. In addition, when testing USB Type-C products against the Interoperability test specifications it is not necessary to test all orientations when performing the boot tests. When testing against the Interoperability test specifications, only when performing inactive attach/reattach tests do all orientations need to be tested.

The below test specifications reqruie testing in all orientations:

  • USB Type-C Functional Tests
  • USB PD Compliance Tests
  • Source Power Tests
  • Link Layer Tests
  • Electrical Tests
  • Interoperability Tests
  • LVS Tests
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USB Type-C ECN BC 1.2 Clarification
Mandate: Required
Effective Date: June, 2018

All USB chargers with USB Type-C receptacles shall advertise Type-C current of at least 1.5A and shall short D+ and D- together with a resistance less than 200ohms.

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USB Car Charger Certification Requirements
Mandate: Required
Effective Date: July, 2018

All USB car chargers seeking certification must be tested at 3 different input voltages to simulate the wide range of input voltages that the charger may be exposed to in an automotive setting. These voltages are 9V, 12.5V and 16V. This means that the charger compliance program must be run 3 times, 1 per input voltage.

The car charger certification program only applies to car chargers implementing a USB Type-C connector.

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USB-C(tm) Hubs without PD must run Bridge Class CV tests
Mandate: Required
Effective Date: February, 2019

USB Hubs with USB Type-C(tm) downstream facing ports are required to run Bridge Class tests using USBCV. Any failures found are considered warnings when hubs do not implement USB Power Delivery on their downstream facing ports.

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