Other Parts Discussed in Thread: TPS65986EVM
Hello!
I have run TPS65982 based device against Ellisys "USB Explorer 350". I have got fail on TD 4.6.2 Try.SRC DRP Connect DRP Test. This is the test report:
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TD.4.6.2 Try.SRC DRP Connect DRP - Testing Dual Role Port |
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INFO |
Starting Subtest |
Using tDrp = 50 ms, dcSRC.DRP = 30% |
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INFO |
Applying Source Terms |
Rd is present in step 3 for longer than tCCDebounce |
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FAILED |
Applying VBUS |
PUT must advertise Rp terminations within 120 ms |
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INFO |
Applying Sink Terms |
Going to step 5 |
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PASSED |
Applying Sink Terms |
PUT must enable VBUS within 100 ms to 475 ms (actual was 382 ms) |
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PASSED |
Applying Sink Terms |
PUT_R must source Vconn |
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PASSED |
Removing Terms |
PUT must transition to TryWait.SNK within 650 ms (actual was 15 ms) |
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PASSED |
Removing Terms |
PUT must transition to Unattached.SRC within 90 ms (actual was 55 ms) |
I have captured CC and VBUS signals during the test, it is shown below.
On waveform marked following points of the test:
3. CVS transitions to Unattached.SRC state (red marker 3.Unattached.SRC)
a. TE monitors Rd presence and goes to point 3.i.
3.i CVS transitions to Attached.SRC (red marker 3.i Unattached.SRC)
3.ii CVS verifies that PUT attaches Rp (blue marker 3.ii PUT should attache Rp here, but there is nothing). Error is here. TPS65982 should assert Rp, so CC signal should rise up.
3.iii CVS transitions to Unattached.SNK.
Could you help me to pass this test? What FW configuration settings could affect to such TPS65982 behaviour?
P.S. SystemConfig.TrySRCSupport is set.
Regards,
Alexander
