Other Parts Discussed in Thread: TUSB320
I have configured a TUSB320LAI as a GPIO device by floating the ADDR pin and tying the PORT & EN pins to GND.
While being tested for USB-IF compliance we fail the test with the following errors:
From the Teledyne test set:
| TD 4.3.3 Sink Connect Try.SRC DRP Test | Fail | The PUT does not transition to Attached.SNK. |
| TD 4.3.4 Sink Connect Try.SNK DRP Test | Fail | The PUT does not continue to provide Rd on the CC pin for the duration of this test. |
| PUT supports USB 2.0 - Step20-26 | Fail | The PUT does not transition to Attached.SNK. |
| PUT supports USB 2.0 - Step27-32 | Fail | The PUT does not transition to Attached.SNK. |
From the Ellisys test set:
|
TD.4.3.4 Sink Connect Try.SNK DRP - Testing Upstream Port |
||
|
PASSED |
Switching Terms |
PUT must constantly advertise Rd termination |
|
PASSED |
Switching Terms |
PUT must advertise both Rd terminations |
|
PASSED |
Entering AttachWait.SRC |
PUT must constantly advertise Rd termination for 100 ms |
|
FAILED |
Entering Try.SNK |
PUT must constantly advertise Rd termination for 150 ms |
|
FAILED |
Entering TryWait.SRC |
PUT must constantly advertise Rd termination for 100 ms |
|
PASSED |
Entering TryWait.SRC |
PUT must advertise both Rd terminations |
|
PASSED |
Applying VBUS |
PUT must constantly advertise Rd termination |
|
FAILED |
Applying VBUS |
PUT must sink no more than 100 mA (actual was 226 mA) |
|
PASSED |
Applying VBUS |
PUT_R must not source Vconn (0 V measured) |
|
PASSED |
Removing VBUS |
PUT must not source VBUS |
|
PASSED |
Removing VBUS |
PUT must not source Vconn (0 V measured) |
Questions:
Will this device pass USB-IF in this configuration?
Is it appropriate to be running Try.SNK DRP on a UFP only device?
