Users Manual User Manual

Protocol Analysis

Table 4 Pre-Defined Trigger Selections

Note 1 Snapshot triggers at state 0 allowing you to get an overview of bus activity

independently of the occurrence of an event, packet or transaction.

Note 2 To trigger on VBus, the level has to remain at the specified value for 2 µsec

with a tolerance of ±10 mV.

Note 3 To trigger on Operating Current, the Operating Current has to remain at the

specified value for at least 0.2 µsec with a tolerance of ±1.5 mA.

Note 4 Triggering on Timing Patterns is available only with the Timing Analysis option.

* Not available in Full/Low speed.

Full/Low speed only.

1 Snap Shot (Note 1) 16 Split Setup Transaction*

2 Any Transaction 17 Split Bulk IN Transaction*

3 Data 18 Split Bulk OUT Transaction*

4 Bus Reset 19 Split Interrupt IN Transaction*

5 Resume 20 Split Interrupt OUT Transaction*

6 Suspend 21 Split Isochronous IN Transaction*

7 Chirp* 23 Split Isochronous OUT Transaction*

8 HNP (OTG event) 24

Setup With Preamble Transaction

9 SRP (OTG event) 25

Asynchronous IN With Preamble Transaction

10 Session (OTG event) 26

Asynchronous OUT With Preamble Transaction

11 Protocol Error 27 Timing Patterns (Note 4)

12 Setup Transaction 28 VBus Measurement (Note 2)

13 In Transaction 28 Operating Current (Note 3)

14 Out Transaction 29 Manual

15 Ping Transaction* 30 External

31 Bus Error (SE1)