Connect-Tek USB-16 Manual de usuario descargar pdf (Pagina 40)

Host High Speed Electrical Test Procedure Revision 1.4

EL_55 Hosts transmitting SOF packets must provide a 40-bit EOP without bit stuffing where the

first symbol of the EOP is a transition from the last data symbol.

Reference documents: USB 2.0 Specification, Section 7.1.13.2

 Pass

 Fail

 N/A

 Comments:

A.1.5 Host Disconnect Detect (EL_36, EL_37)

EL_37 A USB 2.0 downstream facing port must not detect the high-speed disconnect state when

the amplitude of the differential signal at the downstream facing driver’s connector is <= 525 mV.

Reference documents: USB 2.0 Specification, Section 7.1.7.3.

Port P1 P2 P3 P4 P5

PASS

FAIL

NA

Overall Result:

 Pass

 Fail

 N/A

 Comments:

EL_36 A USB 2.0 downstream facing port must detect the high-speed disconnect state when the

amplitude of the differential signal at the downstream facing driver’s connector is ≥ 625 mV.

Reference documents: USB 2.0 Specification, Section 7.1.7.3.

Port P1 P2 P3 P4 P5

PASS

FAIL

NA

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