7/12/2019
15
Assertion #
Test Name
Assertion Description
4.5.2.2.11.2 Exiting from Try.SNK State
4.5.2.2.11.2#1
The port shall wait for tDRPTry and only then begin monitoring the CC1
and CC2 pins for the SNK.Rp state.
4.5.2.2.11.2#2
The port shall transition to Attached.SNK when the SNK.Rp state is
detected on exactly one of the CC1 or CC2 pins for at least tPDDebounce
and Vbus is detected.
4.5.2.2.11.2#3
The port shall transition to TryWait.SRC if SNK.Rp state is not detected
for tPDDebounce.
4.5.2.2.11.2#4
A Sink with Accessory Support shall transition to Unsupported.Accessory
if SNK.Rp state is not detected for tDRPTryWait.
4.5.2.2.12 TryWait.SRC State
4.5.2.2.12.1 TryWait.SRC Requirements
4.5.2.2.12.1#1
The port shall not drive Vbus or Vconn
4.5.2.2.12.1#2
The port shall source current on both CC pins.
4.5.2.2.12.1#3
The port shall provide a separate Rp termination on the CC1 and CC2 pins
as specified in Table 4-15.
4.5.2.2.12.2 Exiting from TryWait.SRC State
4.5.2.2.12.2#1
The port shall transition to Attached.SRC when Vbus is at vSafe0V and the
SRC.Rd state is detected on exactly one of the CC pins for at least
tCCDebounce.
4.5.2.2.12.2#2
The port shall transition to Unattached.SNK after tDRPTry if neither of the
CC1 or CC2 pins are in the SRC.Rd state.
4.5.2.2.13 Unattached.Accessory State
4.5.2.2.13.1 Unattached.Accessory Requirements
4.5.2.2.13.1#1
4.1
4.12
4.14
The port shall not drive VBUS or VCONN.
4.5.2.2.13.1#2
4.12
4.14
The port shall source current on both CC pins independently.
4.5.2.2.13.1#3
4.12
4.14
The port shall provide an Rp as specified in Table 4-15.
4.5.2.2.13.2 Exiting from Unattached.Accessory State
4.5.2.2.13.2#1
4.12
The port shall transition to AttachWait.Accessory when the state of both
pins is SRC.Ra or SRC.Rd
4.5.2.2.13.2#2
4.14
A port that supports Vconn-Powered accessories also shall transition to
AttachWait.Accessory when the state of one CC pin is SRC.Ra and the
other is SRC.Rd
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