USB host IF compliance test tips

Please refer Embedded High-speed Host Electrical Test Procedure and USB-IF Embedded Host Compliance Plan  first.

Tip 1: In Drop test, it related with hardware power layout. Please MUST support the 500mA loads. (VBUS connects 10 ohm to GND.)

Tip2: In Signal quality Test, please check with 0, 1.8, 3, 5M cables. If it's fail, please check the hardware circuit first.

Tip3: In Interoperability Test, the silence message is needed. And messages of hub and NOT support device MUST be different.

Embedded Host	Test Item
Full Speed Test	Drop test
	Droop test
	SRP test
	Interoperability
	Full Speed Downstream Signal Quality Test
High Speed Test	High Speed Signal Quality (EL_2，EL_3，EL_6，EL_7)
	Host Controller Packet Parameters (EL_21，EL_22， EL_23，EL_25，EL_55).
	Host CHIRP Timing (EL_33，EL_34，EL_35)
	Host Suspend/Resume Timing (EL_39，EL_41)
	Device Test J/K，SE0_NAK (EL_8，EL_9)